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Is there a way to make all applications store their data in a folder other than /sdcard (root folder on the sd card) ?
I'm planning on rooting and thought that this time round I can keep my sdcard nice and organized by creating an "ApplicationData" folder in the root of the sdcard and somehow configuring android to use that.
On a similar note, can I move the DCIM (camera photos) to a different location too?
Will the below change-mount-point idea work?
Maybe as root we can
1) un-define /sdcard (in /etc/fstab) //or wherever its defined
2) define /sdcard as /dev/<hdb0>/ApplicationData //change hdb0 to the appropriate device/partition
thanks.
Yeah, I see your point... but quite frankly, I believe it's upto the app developers [my knowledge of the Android world is still from the stone-age!!]... if the app specifies that it's data will be stored in /sdcard/AppName, there's not much you can do, unless you can modify the app...
I was thinking that maybe as root we can
1) un-define /sdcard (in /etc/fstab) //or wherever its defined
2) define /sdcard as /dev/<hdb0>/ApplicationData
edit: added to post#1
britoso said:
I was thinking that maybe as root we can
1) un-define /sdcard (in /etc/fstab) //or wherever its defined
2) define /sdcard as /dev/<hdb0>/ApplicationData
edit: added to post#1
Click to expand...
Click to collapse
I did think of this too...
/sdcard --> /sd/AppData
rest of sd card --> /sd
but I think it would mean some other changes as well... for example... the mount usb functionality would have to be modified to mount/unmount a different volume...
So heres the contents of my fstab file:
Code:
C:\>adb shell cat /system/etc/fstab
/dev/block/mtdblock3 /system yaffs2 rw
/dev/block/mtdblock4 /cache yaffs2 rw
/dev/block/mtdblock5 /data yaffs2 rw
/dev/block/mmcblk0p1 /sdcard vfat rw
/dev/block/mmcblk0p2 /system/sd auto rw
/system/modules/modules.sqf /system/modules squashfs ro,loop
/system/xbin/xbin.sqf /system/xbin squashfs ro,loop
I'll try changing line 4 (/sdcard), I'm guessing /system/sd is for when I apps2sd is enabled.
Question: How do I escape from INSERT/EDIT mode in VI? Tried pressing trackball+1, trackball+1+2...didnt work
Hey britoso!
Keep us updated with your accomplishments. I, personally, am very interested in being able to achieve this.
Good luck!
update: that didnt work.
Note: the way to get the ESCAPE character is CONTROL + [ (hold the trackball then press [ ). The control key is configurable and defaults to the Jogball/TrackBall
here are the contents of my fstab file, the camera app is still writing to the root of the sdcard (/sdcard/DCIM)
Code:
C:\>adb shell cat /system/etc/fstab
/dev/block/mtdblock3 /system yaffs2 rw
/dev/block/mtdblock4 /cache yaffs2 rw
/dev/block/mtdblock5 /data yaffs2 rw
/dev/block/mmcblk0p1 /sdcard/AppData vfat rw
/dev/block/mmcblk0p2 /system/sd auto rw
/system/modules/modules.sqf /system/modules squashfs ro,loop
/system/xbin/xbin.sqf /system/xbin squashfs ro,loop
Heres the output of "df"
Code:
C:\>adb shell df
Filesystem 1K-blocks Used Available Use% Mounted on
tmpfs 197600 0 197600 0% /dev
tmpfs 4096 0 4096 0% /sqlite_stmt_journals
/dev/block/mtdblock3 148480 100088 48392 67% /system
/dev/block/mtdblock5 200960 63752 137208 32% /data
/dev/block/mtdblock4 97280 39628 57652 41% /cache
/dev/block//vold/179:1
15643712 6843256 8800456 44% /sdcard
@britoso
This is what I found out about mounts in Android...
The init program directly mounts all filesystems and devices using either hard-coded file names or device names generated by probing the sysfs filesystem (thereby eliminating the need for a /etc/fstab file in Android).
And from what I see in your df output, it didn't mount /sdcard/AppData...
Have a few ideas in mind... gonna try 'em out now...
craigacgomez said:
gonna try 'em out now...
Click to expand...
Click to collapse
thanks for the info. Let us know how it works out.
Here's what I reached finally...
To achieve this, I have 2 ideas...
1. We gotta modify the init and change the SD mount point to AppData and add another for the rest of the SD... this however would require a rebuilt ROM (I can't edit init on the phone, need to edit init.c from the source)
2. We push some startup scripts to achieve this, but so far, I haven't been able to mount anything else on /sdcard (operation failed), but I think I'm doing something wrong...
Didn't get much time to experiment... and it mite be a busy end of week for me... but I'll try to squeeze in so time to get this...
Why not ask Cyanogen to do this for us in his next ROM?
Or your next favorite modder?
I'm sure they'll like this idea!?
theres a setting in /init.rc that may help
Code:
export EXTERNAL_STORAGE /sdcard
However / is mounted read-only
mount
rootfs on / type rootfs (ro,relatime)
Click to expand...
Click to collapse
Hello
in the CallBug Thread wrote any User can be flash CM10 on the new Layout. I replaced any in the updater-script in META-INF...
to its work you need
- Topogigis LGP990-ICS28G_TG or a another ICS with new unlocked Bootloader and new Layout and CWM 6
No i worked hard and first Tests says it can works. I tested it with the Kernel from Topogigi_SP2_ICS28G_20121126... I see the Bootscreen. Next step i test it with the Kernel form CallBugThread... I see only the LG Logo.
Next i test it with the boot.img from LGP990_ICS_v28G_Stock_NewBL_Root_CWM_initd_NVFlash
in the Moment i dont see the Starts Wizard
Now i must first do following:
In CWM go to mount and storage and format: system, data, cache manually
wipe Data/Cache (factory-reset) is not enough
a success boot to start wizard works only when any can make a Kernel. In the Moment, all available Kernel is not enough
in the Attachment the Updaterscript
pengus77 have made a step by step guide for work CM10 with the new Bootloader and Layout
pengus77 said:
So... here comes the step-by-step sum up guide to boot cm10 on the new bootloader !
1) Edit BoardConfig.mk in device/lge_p990/lge_p990 and replace
Code:
BOARD_SYSTEMIMAGE_PARTITION_SIZE := 665681920
BOARD_USERDATAIMAGE_PARTITION_SIZE := 1170259968
with
Code:
BOARD_SYSTEMIMAGE_PARTITION_SIZE := 536870912
BOARD_USERDATAIMAGE_PARTITION_SIZE := 1610612736
then add this line
Code:
TARGET_USERIMAGES_SPARSE_EXT_DISABLED := true
and replace this other one
Code:
BOARD_VOLD_MAX_PARTITIONS := 10
with
Code:
BOARD_VOLD_MAX_PARTITIONS := 20
2) Edit, in the same folder, the file init.p990.rc and fix it so that it looks like this
Code:
# mount partitions
mount ext4 /dev/block/mmcblk0p12 /system wait
mount ext4 /dev/block/mmcblk0p12 /system ro noatime remount barrier=1 wait
# We chown/chmod /data again so because mount is run as root + defaults
mount ext4 /dev/block/mmcblk0p9 /data nosuid nodev noatime barrier=1 wait
chown system system /data
chmod 0771 /data
mount ext4 /dev/block/mmcblk0p2 /cache nosuid nodev noatime barrier=1 wait
chown system cache /cache
chmod 0770 /cache
mount ext3 /dev/block/mmcblk0p7 /lgdrm nosuid nodev noatime
3) Edit, always there, the file vold.fstab
Code:
dev_mount sdcard /storage/sdcard1 auto /devices/platform/sdhci-tegra.2/mmc_host/mmc1
dev_mount emmc /storage/sdcard0 11 /devices/platform/sdhci-tegra.3/mmc_host/mmc0
4) Edit (yeah same folder, same folder) the file recovery.fstab (don't know for sure if it's needed but here we go...)
Code:
# mount point fstype device [device2] fstype2
/recovery emmc /dev/block/mmcblk0p8
/boot emmc /dev/block/mmcblk0p6
/cache ext4 /dev/block/mmcblk0p2
/data ext4 /dev/block/mmcblk0p9
/external_sd vfat /dev/block/mmcblk1p1
/sdcard vfat /dev/block/mmcblk0p11
/system ext4 /dev/block/mmcblk0p12
5) Go to kernel/lge/star/arch/arm/configs/cyanogenmod_p990_defconfig and replace this line
Code:
CONFIG_CM_BOOTLOADER_COMPAT=y
with this
Code:
CONFIG_CM_BOOTLOADER_COMPAT=n
6) Edit kernel/lge/star/arch/arm/mach-tegra/lge/star/include/lge/board-star-nv.h and replace
Code:
#define LGE_NVDATA_PARTITION "/dev/block/mmcblk0p3"
with
Code:
#define LGE_NVDATA_PARTITION "/dev/block/mmcblk0p5"
7) In device/lge/star-common/init.cm-star.rc modify this (at about line 120)
Code:
chmod 777 /dev/block/mmcblk0p3
chmod 644 /dev/block/mmcblk0p5
into this
Code:
chmod 777 /dev/block/mmcblk0p5
chmod 644 /dev/block/mmcblk0p6
8) Replace vendor/lge/p990/proprietary/lib/liblgeril.so with the one attached or edit it with a hex editor and change mmcblk0p3 with mmcblk0p5
9) Fix reboot-to-recovery by editing the file device/lge/star-common/prebuilt/setup-recovery and change it to this
Code:
#!/system/bin/sh
echo "boot-recovery" | dd of=/dev/block/mmcblk0p5 seek=6144 bs=1
10) Time for a brunch ! Compile cm10 as usual, then in out/target/product/p990 grab system.img and boot.img and copy them to your nvflash folder... that of course you know how to use and already have installed I used the ICS nvflash pack from Stefan and from Topogigi. Leave the defaults as they are, replace system.img and boot.img and flash
DO NOT FLASH THE INTERNAL SD CONTENTS OF THE ICS ROMS !!!
11) Fix the sdcard by enabling debug mode after the first boot, enter via adb and manually mount it with "mount -t ext3 /dev/block/mmcblk0p11 /storage/sdcard0". Then go in settings -> storage and format it from there.
Hope this is everything... if i forgot something shout
Update: The attached ics-partitions.cfg file for nvflash has the ext3 fs fix for the MSC partition... better safe than sorry
Attachments: http://forum.xda-developers.com/attachment.php?attachmentid=1577239&d=1355958301
http://forum.xda-developers.com/attachment.php?attachmentid=1577265&d=1355958826
Click to expand...
Click to collapse
Orginalpost: http://forum.xda-developers.com/showpost.php?p=35661482&postcount=100
Big thanks to all User and Devs where help him and the specially Thanks go to pengus77
Important: Use it at own risk, when you brick your phone... dont blame me
This is for CM10 based Builds: http://d-h.st/Nfe
This is for CM10.1 based Builds: http://d-h.st/5VO
You need to edit the cm10 kernel itself to make it bootable with the new partition.
Sent from my LG-P990 using xda app-developers app
I have no Linux to edit the kernel. And unfortunately I do not also the knowledge. I figured that you can get as basics to run it. I dealt with the feasibility
Need kernel dev to do this. This is the best way to prove if the layout partition is indeed has nothing to do with the call bug.
Sent from RC's Official CM10
Okay will get you kernel img tomorrow with proper ICS ramdisk.
You will need to put that kernel and modules in cm10 zip and also change updater script as necessary.
Sent from my Nexus 4
Finished my build. Waiting to nvflash my phone to new partition and then test. *fingers crossed*
Imperticus said:
Finished my build. Waiting to nvflash my phone to new partition and then test. *fingers crossed*
Click to expand...
Click to collapse
so if it works, u will give a link, so other ppl can try it too? :fingers-crossed:
Using CM10 with the old and the new bootloader?
There is no need to reinvent the wheel: just use wkpark's excellent patch on CM10 (kernel) source.
http://forum.xda-developers.com/showpost.php?p=33993473&postcount=636
not working for me, dont have time to try fix it. guess i'll just wait for harsh.
Here is cwm flashable new CM10 with modified kernel for NEW BOOTLOADER. It is untested (I am using ICS on old boot loader), so booting up is not guaranteed.
Those who dont know what they are doing, please stay away from this download.
http://d-h.st/auX
You will need NEW Bootloader, partition and recovery for new bootloader.
I am on ROM_OptiICS-v0.6_LGP990_CWM-v6_v28G-based_NVflash can i try this from CMW like full wipe + wipe cash then install from SD
komunistvb said:
I am on ROM_OptiICS-v0.6_LGP990_CWM-v6_v28G-based_NVflash can i try this from CMW like full wipe + wipe cash then install from SD
Click to expand...
Click to collapse
yes, but dont forget to backup first. This is highly experimental cm10.
Let me know how it goes.
thank u i will try it!
Harsh said:
Here is cwm flashable new CM10 with modified kernel for NEW BOOTLOADER. It is untested (I am using ICS on old boot loader), so booting up is not guaranteed.
Those who dont know what they are doing, please stay away from this download.
http://d-h.st/auX
You will need NEW Bootloader, partition and recovery for new bootloader.
Click to expand...
Click to collapse
I was having problem with the updater-script, it wasnt flashing properly. Guess i tried changing too much.
Imperticus said:
I was having problem with the updater-script, it wasnt flashing properly. Guess i tried changing too much.
Click to expand...
Click to collapse
Not to mess with updater script too much, just change system mmcblk0p1 to mmcblk0p12 and change for kernel from mmcblk0p5 to mmcblk0p6.
thats all i did in script.
and changed kernel with ramdisk for same. nothing more in system
Try to flash via CMW-based Recovery v6.0.1.5 and get this
(Status 7) Error
So, first test: I can Flash it when i remove the first line (assert(getprop("ro.product.device") == "p990" || getprop("ro.build.product") == "p990")
But dont boot yet. I dont see the Bootanimation,
I test it with a another combination
EDIT: @ Harsh, the Topogigi SP 2 Kernel are the best Basis i think, i can with this see the Bootanimation. Have a look in Topogigis Kernel and boot.img. With yours i see only the LG Logo
MetaIIica said:
So, first test: I can Flash it when i remove the first line (assert(getprop("ro.product.device") == "p990" || getprop("ro.build.product") == "p990")
But dont boot yet. I dont see the Bootanimation,
I test it with a another combination
EDIT: @ Harsh, the Topogigi SP 2 Kernel are the best Basis i think, i can with this see the Bootanimation. Have a look in Topogigis Kernel and boot.img. With yours i see only the LG Logo
Click to expand...
Click to collapse
His kernel boot.img have ramdisk from ICS stock. This one has modified CM10 ramdisk. Will check if change of ramdisk matters or not.
Harsh said:
Here is cwm flashable new CM10 with modified kernel for NEW BOOTLOADER. It is untested (I am using ICS on old boot loader), so booting up is not guaranteed.
Those who dont know what they are doing, please stay away from this download.
http://d-h.st/auX
You will need NEW Bootloader, partition and recovery for new bootloader.
Click to expand...
Click to collapse
Too much slow to download
Sent from my LG-P990 using xda app-developers app
Edit: see my next post
Well, since i'm not aware of anyone else doing it, and it will be necessary for any real development to occur, I have decided to try porting Clockworkmod Recovery to the Ouya. I am downloading ubuntu right now and I'll start trying to build it from source against our current recovery tonight or tomorrow night depending on how long the setup and prerequisites take.
The reason I'm posting this now, is to solicit help. I've never built CWM before, but XDA has a really great tutorial I'm going to follow, but if anyone here has had experience in the past I'd love some help/tips, and other than that I would like a few brave souls to volunteer and try flashing it on their Ouya when/if I have a build that works on my own.
I'll update this thread with my progress, if I make any, and please let me know if any of you are willing to help in any way.
Update 1:
I have compiled a version of CWM recovery that theoretically should work, but I'm unable to flash it. I have installed flash_image onto the ouya and it works fine, but i normally would have used "flash_image recovery recovery.img" however there is no "recovery" partition on the ouya. This is what I get:
./flash_image recovery recovery.img
error scanning partitions: No such file or directory
Mount reveals the following info:
mount
rootfs / rootfs ro,relatime 0 0
tmpfs /dev tmpfs rw,nosuid,relatime,mode=755 0 0
devpts /dev/pts devpts rw,relatime,mode=600 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,relatime 0 0
debugfs /sys/kernel/debug debugfs rw,relatime 0 0
none /acct cgroup rw,relatime,cpuacct 0 0
tmpfs /mnt/asec tmpfs rw,relatime,mode=755,gid=1000 0 0
tmpfs /mnt/obb tmpfs rw,relatime,mode=755,gid=1000 0 0
none /dev/cpuctl cgroup rw,relatime,cpu 0 0
/dev/block/platform/sdhci-tegra.3/by-name/APP /system ext4 ro,relatime,user_xatt
r,acl,barrier=1,data=ordered 0 0
/dev/block/platform/sdhci-tegra.3/by-name/CAC /cache ext4 rw,nosuid,nodev,noatim
e,errors=panic,user_xattr,acl,barrier=1,journal_async_commit,nodelalloc,data=wri
teback 0 0
/dev/block/platform/sdhci-tegra.3/by-name/UDA /data ext4 rw,nosuid,nodev,noatime
,errors=panic,user_xattr,acl,barrier=1,journal_async_commit,nodelalloc,data=writ
eback 0 0
/dev/fuse /storage/sdcard0 fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1
023,default_permissions,allow_other 0 0
This is the script from the OTA update:
#!/system/bin/sh
if ! applypatch -c EMMC:/dev/block/platform/sdhci-tegra.3/by-name/SOS:5906432:f80238c4f4a53888b547e4463fb4751343f23412; then
log -t recovery "Installing new recovery image"
applypatch EMMC:/dev/block/platform/sdhci-tegra.3/by-name/LNX:5277696:5d7013bf98f76199ea5b7d7d8baeb07fa3ad26ff EMMC:/dev/block/platform/sdhci-tegra.3/by-name/SOS f80238c4f4a53888b547e4463fb4751343f23412 5906432 5d7013bf98f76199ea5b7d7d8baeb07fa3ad26ff:/system/recovery-from-boot.p
else
log -t recovery "Recovery image already installed"
fi
but I can't make any sense of it. If anyone can help out i'd much appreciate it...
sonofskywalker3 said:
but I can't make any sense of it. If anyone can help out i'd much appreciate it...
Click to expand...
Click to collapse
This seems to be the magic lines in the update script:
if ! applypatch -c EMMC:/dev/block/platform/sdhci-tegra.3/by-name/SOS:5906432:f80238c4f4a53888b547e4463fb4751343f23412; then
log -t recovery "Installing new recovery image"
applypatch EMMC:/dev/block/platform/sdhci-tegra.3/by-name/LNX:5277696:5d7013bf98f76199ea5b7d7d8baeb07fa3ad26ff EMMC:/dev/block/platform/sdhci-tegra.3/by-name/SOS f80238c4f4a53888b547e4463fb4751343f23412 5906432 5d7013bf98f76199ea5b7d7d8baeb07fa3ad26ff:/system/recovery-from-boot.p
Click to expand...
Click to collapse
I don't know much about the applypatch program. It might just be another script. Since it isn't being called with a "./", I'd imagine it is installed somewhere that the path mentions. Try looking for "applypatch" to see if it is a program or script. In a terminal running on the Ouya, try running "echo $PATH". Hopefully you get a list of directories containing program locations (e.g. /usr/bin/ ...etc). Applypatch might be in one of those directories.
UPDATE 1:
applypatch is a binary, not a script. It is located in /system/bin/
I tried running it without arguments on my Nexus 7 (to see if we would luck out with a nice "usage" message), but for some annoying reason I can't give it execute permissions, even as root. I'll look deeper into the scripts
UPDATE 2:
I need to verify this on my Ouya, but from the updater-script in the latest OTA, the kernel partition is /dev/block/platform/sdhci-tegra.3/by-name/LNX (I'm going out on a limb here boys, but I think LNX stands for Linux, aka, our kernel, lol).
UPDATE 3:
Seems like the recovery partition is /dev/block/platform/sdhci-tegra.3/by-name/SOS
I don't know much about the details of "applypatch", but the recovery script you posted above seems to first check to see if the recovery partition hashes to f80238c4f4a53888b547e4463fb4751343f23412 (the hash of the latest and greatest recovery). If it doesn't, then we flash the latest recovery, which from the looks of it consists of the kernel (in LNX) with a patch applied to it from recovery-from-boot.p (another mess of binary). In other words, it looks like they build a recovery from the existing kernel, as the name "recovery-from-boot" implies (the kernel is packaged in a file called boot.img).
Long story short, it looks like you can write to the block device /dev/block/platform/sdhci-tegra.3/by-name/SOS to write a new recovery. Aka, in a hacked version of the OTA script, include the line
package_extract_file("recovery.img", "/dev/block/platform/sdhci-tegra.3/by-name/SOS");
where recovery.img is the name of your new recovery. They did something very similar to the kernel (LNX). I'm pretty sure that the correct way to do something like this is to use "dd" after verifying the image is correct (by running a hash against the image). I'm not sure why the Ouya team is using package_extract_file() instead of dd. I'm not in front of my Ouya though, LNX and SOS could be folders rather than block devices (although /dev/block seems to imply otherwise).
You can remove most of the other lines in the script that install the actual OTA update files. If you need help, let me know. I can make a custom update-script for you.
WARNING!!!!!!!! The above is just my take on things from looking at the scripts for 20 minutes. This could total brick your device if your recovery isn't of the right format or is not correctly built. Don't say I didn't warn ya.
You might want to read off the contents of the SOS to compare in a hex editor to your recovery. We might find out some things that would prevent a brick.
Sent from my Nexus 7 using xda premium
Thank you for all your detailed information. I assumed that if my cwm recovery build failed I could just flash the boot.img from the ota and restore it, but it sounds like that might not be correct if the update is dependent on a hashed, preexisting recovery/kernel. I used the boot.img from the ota to build the recovery at http://builder.clockworkmod.com/ and it showed successful and gave me these four files:
https://dl.dropboxusercontent.com/u/7653846/Archive.zip
So to test, should I be able to flash_image /dev/block/platform/sdhci-tegra.3/by-name/SOS recovery.img?
my concern is that particular block doesn't show up on a mount command...
sonofskywalker3 said:
Thank you for all your detailed information. I assumed that if my cwm recovery build failed I could just flash the boot.img from the ota and restore it, but it sounds like that might not be correct if the update is dependent on a hashed, preexisting recovery/kernel. I used the boot.img from the ota to build the recovery at http://builder.clockworkmod.com/ and it showed successful and gave me these four files:
https://dl.dropboxusercontent.com/u/7653846/Archive.zip
So to test, should I be able to flash_image /dev/block/platform/sdhci-tegra.3/by-name/SOS recovery.img?
my concern is that particular block doesn't show up on a mount command...
Click to expand...
Click to collapse
I'm putting together an zip to flash in the stock recovery. This way we mimic what the stock updates do to flash over partitions.
I'm reading http://forums.ouya.tv/discussion/1380/recovery-mode right now in order to figure out how to get into the stock recovery.
One thing that I noticed is that I think your recovery is slightly larger than the stock one. I'm not sure how large SOS is, but I wouldn't want to flash over adjacent blocks (i.e. write out of bounds).
Makes sense. You must know something I don't if you can get it to flash in stock recovery... I tried simply adding files to the ota zip and flashing it and it failed.
sonofskywalker3 said:
Makes sense. You must know something I don't if you can get it to flash in stock recovery... I tried simply adding files to the ota zip and flashing it and it failed.
Click to expand...
Click to collapse
It probably doesn't work because the update.zip we're using is signed.
Just a thought, but an easier way to go, albeit dangerous, is to do the following. You need root access over adb to do this. Using dd is VERY dangerous. THIS MIGHT NOT WORK. We need to make sure that what we are writing to (/dev/block/platform/sdhci-tegra.3/by-name/SOS) is truly the block device containing the recovery partition or else this might brick the Ouya. In the past, I've seen recovery written to /dev/block/mmcblk0pX, where X is the recovery partition for the particular device. I'm not much of a tegra guy. I know more about Samsung's stuff.
1) place the recovery.img on your ouya (let's say in /sdcard/recovery.img)
2) open a terminal running on your Ouya (over adb would probably be best, e.g. "adb shell")
3) enter a root shell, type "su"
4) make a backup of your existing recovery partition with "dd if=/dev/block/mmcblk0p1 of=/sdcard/origRecovery.img"
5) write the new recovery to the recovery partition with "dd if=/sdcard/recovery.img of=/dev/block/mmcblk0p1"
6) perform the following from user mbm in the Ouya forums to get into recovery (thread http://forums.ouya.tv/discussion/1380/recovery-mode)
This is a hack, an unintended sequence of events that results in recovery mode; what you need to do is crash the startup using sysrq.
For this you'll need a usb keyboard with the sysrq key, this is usually the printscreen button if your keyboard isn't labeled. As the OUYA starts to boot, hold down the alt-sysrq keys and press i, wait a few seconds and then repeat. This key combination is kill-all-tasks; thanks to whoever left this enabled in the kernel. Each time you kill the tasks the init process will restart them, after about 5 or 6 times init will print a warning on the console that one of the processes marked critical has been restarted too many times -- this then triggers an automatic reboot into recovery mode.
Unfortunately it's not always obvious when the ouya is in recovery mode. You might get screen with the ouya logo and a large red exclamation mark, or the screen might be entirely black; usually I got a black screen. Press the home button on the keyboard to bring up the recovery menu; it's actually a toggle so feel free to press the home button repeatedly until you see the menu since the timing isn't otherwise obvious.
Click to expand...
Click to collapse
There are two big unknowns here:
1) We don't know for sure that the new recovery (CWM) will actually work
2) We don't know for sure that /dev/block/platform/sdhci-tegra.3/by-name/SOS is the correct place to be writing a recovery
I'll see what I can dig up regarding /dev/block/platform/sdhci-tegra.3/by-name/SOS
---------- Post added at 02:53 PM ---------- Previous post was at 02:30 PM ----------
/dev/block/platform/sdhci-tegra.3/by-name/SOS is a link to /dev/block/mmcblk0p1
So far, it appears that the layout is the following:
Kernel (boot.img) is mmcblk0p2
Recovery is mmcblk0p1
System is mmcblk0p3
Sent from my SCH-I535 using xda premium
---------- Post added at 02:56 PM ---------- Previous post was at 02:53 PM ----------
I would imagine that if the recovery partition really is SOS, then the above steps would work if you could run them as root.
Sent from my SCH-I535 using xda premium
Some definite info:
SOS is recovery
OUYA firmware updates patches the boot partition on the fly (binary patching) - silly and error prone, but *shrug*. Don't need apply patch at all. dd is fine
It's much safer to use 'fastboot boot recovery.img' while in fastboot mode. This allows loading recovery or boot.img's into ram and execute them from there. Once that works 100%, you can flash it to SOS.
As most people already know, it's not possible to force the device into recovery. It has to be done with something like 'adb reboot recovery'.
mybook4 said:
I'm putting together an zip to flash in the stock recovery. This way we mimic what the stock updates do to flash over partitions.
I'm reading http://forums.ouya.tv/discussion/1380/recovery-mode right now in order to figure out how to get into the stock recovery.
One thing that I noticed is that I think your recovery is slightly larger than the stock one. I'm not sure how large SOS is, but I wouldn't want to flash over adjacent blocks (i.e. write out of bounds).
Click to expand...
Click to collapse
It's 8MB. If you dd to the block device (e.g. mmcblk0p1), you can't write out of bounds. The linux kernel knows the size and refuses it.
rayman said:
Some definite info:
SOS is recovery
OUYA firmware updates patches the boot partition on the fly (binary patching) - silly and error prone, but *shrug*. Don't need apply patch at all. dd is fine
It's much safer to use 'fastboot boot recovery.img' while in fastboot mode. This allows loading recovery or boot.img's into ram and execute them from there. Once that works 100%, you can flash it to SOS.
As most people already know, it's not possible to force the device into recovery. It has to be done with something like 'adb reboot recovery'.
Click to expand...
Click to collapse
I did the following with skywalker's recovery.
1) Attached a usb keyboard to the Ouya's full size usb port
2) Attached my computer to the Ouya's micr usb port
3) Ran "adb reboot bootloader" (the Ouya rebooted to a blank screen)
4) Waited 30 seconds and ran "fastboot boot recovery.img" (skywalker's recovery file)
The Ouya rebooted into CWM Recovery v6.0.3.2!
Error messages were encountered on the recovery screen (image attached)
5) Navigated around CWM with the arrow keys and the enter key
6) Rebooted with "reboot system now". Ouya booted right up.
When we flash the recovery to mmcblk0p1, we should rename /system/etc/install-recovery.sh (and maybe /system/recovery-from-boot.p) to prevent the recovery partition from being overwritten.
Looks like we need to adjust the recovery so it properly mounts the partitions. Hopefully after that we are good to go.
Wow, that's awesome progress! So I'll try the same steps when I get home tonight and then try building another recovery with proper mount points.
sonofskywalker3 said:
Wow, that's awesome progress! So I'll try the same steps when I get home tonight and then try building another recovery with proper mount points.
Click to expand...
Click to collapse
I think it should be a matter of placing the proper partitions in the fstab prior to creating the recovery image. From the error messages it looks like /cache and /data are the culprits.
If you get a chance to, please post the fstab you use so we can double check everything (want to avoid the potential for bricks).
Sent from my SCH-I535 using xda premium
I did the build without a custom fstab first to see if it would work. I'll make one tonight, or if anyone here has done it before feel free to make sure it's done right, this will be my first try at it.
Update:
Started making the fstab and got rid of the errors on my second build, seems it still can't mount some. making progress though.
Update2:
I have compiled a new recovery using the following recovery.fstab:
/cache ext4 /dev/block/platform/sdhci-tegra.3/by-name/CAC
/system ext4 /dev/block/platform/sdhci-tegra.3/by-name/APP
/data ext4 /dev/block/platform/sdhci-tegra.3/by-name/UDA
/sdcard fuse /dev/fuse
this is based on information gathered from the mount command in an adb shell. it no longer gives the long string of errors, or complains that it can't mount any partitions except i get the following errors now:
can't mount /cache/recovery/command
can't mount /cache/recovery/last_log
can't open /cache/recovery/last_log
and a few others. not sure how to proceed at this point. I'm searching Google, but has anyone run into this before?
sonofskywalker3 said:
I did the build without a custom fstab first to see if it would work. I'll make one tonight, or if anyone here has done it before feel free to make sure it's done right, this will be my first try at it.
Update:
Started making the fstab and got rid of the errors on my second build, seems it still can't mount some. making progress though.
Update2:
I have compiled a new recovery using the following recovery.fstab:
/cache ext4 /dev/block/platform/sdhci-tegra.3/by-name/CAC
/system ext4 /dev/block/platform/sdhci-tegra.3/by-name/APP
/data ext4 /dev/block/platform/sdhci-tegra.3/by-name/UDA
/sdcard fuse /dev/fuse
this is based on information gathered from the mount command in an adb shell. it no longer gives the long string of errors, or complains that it can't mount any partitions except i get the following errors now:
can't mount /cache/recovery/command
can't mount /cache/recovery/last_log
can't open /cache/recovery/last_log
and a few others. not sure how to proceed at this point. I'm searching Google, but has anyone run into this before?
Click to expand...
Click to collapse
I'm still new at making a recovery.fstab, but I noticed the following:
From running "ls -l /dev/block/platform/sdhci-tegra.3/by-name/"
lrwxrwxrwx root root 2013-05-25 02:23 APP -> /dev/block/mmcblk0p3
lrwxrwxrwx root root 2013-05-25 02:23 CAC -> /dev/block/mmcblk0p4
lrwxrwxrwx root root 2013-05-25 02:23 LNX -> /dev/block/mmcblk0p2
lrwxrwxrwx root root 2013-05-25 02:23 MDA -> /dev/block/mmcblk0p8
lrwxrwxrwx root root 2013-05-25 02:23 MSC -> /dev/block/mmcblk0p6
lrwxrwxrwx root root 2013-05-25 02:23 SOS -> /dev/block/mmcblk0p1
lrwxrwxrwx root root 2013-05-25 02:23 UDA -> /dev/block/mmcblk0p9
lrwxrwxrwx root root 2013-05-25 02:23 UPP -> /dev/block/mmcblk0p5
lrwxrwxrwx root root 2013-05-25 02:23 USP -> /dev/block/mmcblk0p7
Click to expand...
Click to collapse
Since the APP, CAC, LNX files are links to mmcblk0pX devices, maybe we should be using the mmcblk0pX names?
We should look at more examples to see what the recovery.fstab for other devices looks like. From what I've seen of other devices, mmcblk0pX devices are listed in recovery.fstab.
P.S. So far, I think we are fairly certain that
APP is the system partition
CAC is the cache partition
LNX is kernel boot.img
SOS is the recovery partition
I'm not sure what the rest are (data, etc). Is there a definitive list somewhere?
Here's what I was able to find based on your suggestion, it's the recovery.fstab from the nexus 7:
/system ext4 /dev/block/platform/sdhci-tegra.3/by-name/APP
/cache ext4 /dev/block/platform/sdhci-tegra.3/by-name/CAC
/data ext4 /dev/block/platform/sdhci-tegra.3/by-name/UDA length=-32768
/misc emmc /dev/block/platform/sdhci-tegra.3/by-name/MSC
/boot emmc /dev/block/platform/sdhci-tegra.3/by-name/LNX
/recovery emmc /dev/block/platform/sdhci-tegra.3/by-name/SOS
/staging emmc /dev/block/platform/sdhci-tegra.3/by-name/USP
Obviously this isn't exactly right, but it's a start until we can find more about the mounts.
I tried making the recovery.fstab using the mmcblk numbers but that made no difference... Cache always mounts empty. I'm going to try one more thing, then I'll post my final results and go to bed.
Update:
Well still no love, and no noticeable progress between recovery 2 and 7, but I feel like we're chipping away in the right direction. I'll seek some help from some more experienced recovery people tomorrow.
sonofskywalker3 said:
Here's what I was able to find based on your suggestion, it's the recovery.fstab from the nexus 7:
/systemext4/dev/block/platform/sdhci-tegra.3/by-name/APP
/cacheext4/dev/block/platform/sdhci-tegra.3/by-name/CAC
/dataext4/dev/block/platform/sdhci-tegra.3/by-name/UDAlength=-32768
/misc emmc /dev/block/platform/sdhci-tegra.3/by-name/MSC
/bootemmc/dev/block/platform/sdhci-tegra.3/by-name/LNX
/recoveryemmc/dev/block/platform/sdhci-tegra.3/by-name/SOS
/staging emmc /dev/block/platform/sdhci-tegra.3/by-name/USP
Obviously this isn't exactly right, but it's a start until we can find more about the mounts.
I tried making the recovery.fstab using the mmcblk numbers but that made no difference... Cache always mounts empty. I'm going to try one more thing, then I'll post my final results and go to bed.
Click to expand...
Click to collapse
Good stuff.
Not sure how we are going to get the field length= . I noticed the same field being used in the US Galaxy S III recovery https://raw.github.com/CyanogenMod/android_device_samsung_d2-common/cm-10.1/recovery.fstab
length= field is probably not needed, as the stock recovery doesn't list it.
Sent from my SCH-I535 using xda premium
Here's the recovery.fstab from my Ouya's recovery partition.
# mount point fstype device
/recovery emmc /dev/block/platform/sdhci-tegra.3/by-name/SOS
/boot emmc /dev/block/platform/sdhci-tegra.3/by-name/LNX
/system ext4 /dev/block/platform/sdhci-tegra.3/by-name/APP
/cache ext4 /dev/block/platform/sdhci-tegra.3/by-name/CAC
/misc emmc /dev/block/platform/sdhci-tegra.3/by-name/MSC
/staging emmc /dev/block/platform/sdhci-tegra.3/by-name/USP
/metadata emmc /dev/block/platform/sdhci-tegra.3/by-name/MDA
/data ext4 /dev/block/platform/sdhci-tegra.3/by-name/UDA
/sdcard vfat /dev/block/platform/sdhci-tegra.0/by-num/p1
Click to expand...
Click to collapse
I tried doing CWM build with this recovery.fstab. /system, /data, and /cache all mounted.
Couldn't mount /sdcard automatically (trying to choose zip from sdcard) or manually (in mounts and storage, mount /sdcard).
I tweaked the recovery.fstab to the following:
/recovery emmc /dev/block/platform/sdhci-tegra.3/by-name/SOS
/boot emmc /dev/block/platform/sdhci-tegra.3/by-name/LNX
/system ext4 /dev/block/platform/sdhci-tegra.3/by-name/APP
/cache ext4 /dev/block/platform/sdhci-tegra.3/by-name/CAC
/misc emmc /dev/block/platform/sdhci-tegra.3/by-name/MSC
/staging emmc /dev/block/platform/sdhci-tegra.3/by-name/USP
/metadata emmc /dev/block/platform/sdhci-tegra.3/by-name/MDA
/data ext4 /dev/block/platform/sdhci-tegra.3/by-name/UDA
/sdcard datamedia /dev/null
Click to expand...
Click to collapse
This one mounted /sdcard correctly. I can "choose a zip from sdcard". I didn't actually choose a zip yet. I didn't format any of the partitions. I suppose we could try making a quick cwm zip to write something to the sdcard to test it out.
I've attached the stock Ouya recovery.img (from SOS partition). THIS IS NOT A CWM FLASHABLE ZIP, it only contains a zipped up version of the stock recovery.img. The md5 hash of the unzipped recovery.img is a6c1a6962984e9080ed8821628c4cc3f.
I've attached the CWM recovery.img that worked for me. THIS IS NOT A CWM FLASHABLE ZIP, it only contains a zipped up version of a newly built CWM recovery.img. The md5 hash of the unzipped recovery.img is c6b37906f280b16cd200503c3cde6dfb.
well, when I build using your suggested recovery.fstab i'm still getting the same error about the cache, but i booted the cwm you built and saw what you meant. can you post your actual recovery.fstab file so I can try to build with it? where did you get the boot.img you are using?
Update!
It worked!! I booted to your attached cwm and I'm running a nandroid backup right now. I'll try a restore next. In the meantime I'm putting together a Playmusic.zip flashable zip with the files necessary to get play music up and running and I'll try flashing it. Awesome work tracking down those partitions!
sonofskywalker3 said:
well, when I build using your suggested recovery.fstab i'm still getting the same error about the cache, but i booted the cwm you built and saw what you meant. can you post your actual recovery.fstab file so I can try to build with it? where did you get the boot.img you are using?
Click to expand...
Click to collapse
I edited the comment right above yours.
Recovery Builder wants the stock recovery.img, so I used adb to copy my Ouya's recovery partition to the sdcard, then I used adb pull to copy the recovery partition to my computer.
1) adb shell
2) su
3) cd /dev/block/platform/sdhci-tegra.3/by-name
4) dd if=SOS of=/sdcard/stockRecovery.img
5) exit
6) adb pull /sdcard/stockRecovery.img .
I used the recovery.fstab attached to this post. I obtained the stock Ouya recovery.fstab by doing the following:
I used split_bootimg.pl to split up the recovery.img into kernel and ramdisk (see Alternate Method in http://android-dls.com/wiki/index.php?title=HOWTO:_Unpack,_Edit,_and_Re-Pack_Boot_Images). I used gzip to unzip the ramdisk and saw the stock recovery.fstab in /etc.
Here's what I did step by step:
1) split_bootimg.pl stockRecovery.img
2) mkdir ramdisk
3) cd ramdisk
4) gzip -dc ../stockRecovery.img-ramdisk.gz | cpio -i
in the ramdisk directory is etc/recovery.fstab
I then copied this file and edited the last line (/sdcard stuff). I used the new recovery.fstab with the Recovery Builder.
sonofskywalker3 said:
It worked!! I booted to your attached cwm and I'm running a nandroid backup right now. I'll try a restore next. In the meantime I'm putting together a Playmusic.zip flashable zip with the files necessary to get play music up and running and I'll try flashing it. Awesome work tracking down those partitions!
Click to expand...
Click to collapse
Awesome! Let us know how the backup/restore and zip flashing goes.
Once we verify that this CWM works correctly, people should be able write the new recovery by doing the following (NOTE this wasn't tested yet. I need to test it out first):
1) adb reboot bootloader
2) wait 30 seconds (blank screen is normal)
3) fastboot flash recovery recovery.img
4) fastboot reboot recovery (need a usb keyboard to navigate CWM)
5) flash a CWM zip to prevent stock recovery overwrite (we need to make this. The zip file should mount /system, rename recovery-from-boot.p to recovery-from-boot.bak, and unmount /system)
6) profit
Most of this could potentially be automated into a root/install CWM script.
Backup worked fine, flash worked and I'm booting now to make sure it put the files where it was supposed to and see if they work. Then i'll reboot and restore and make sure those files go away.One thing to note is that when i choose reboot system now it asked me to disable recovery flash,so I took the plunge and said yes, we'll see if it goes back to stock or not...
Update:
The .zip I built said it flashed correctly (unless i'm reading wrong the parts i could see with the overscan problems i'm having) but the files did not go to /system/app. I have attached the .zip file to see if I did something wrong with it, I just grabbed a sample from online and changed the files, haven't checked updater-script yet. I am restoring now, will post update on if that works.
It rebooted to stock recovery, as I expected, so still haven't flashed it just yet.
Well my oversensitive keyboard just hit enter twice so I'm actually backing up again, but I have to leave and take my daughter to a muesuem now, so I won't be able to continue until later. Good luck, i'll be keeping up with this thread on my phone.
Edit: removed non working zip
This topic is for developers and future testers, we are at least 3-4 people that try to boot Ubuntu Touch on Nexus S. Joint work would be better, don't you think?
IRC Channel: irc.androidirc.com #ubuntu-touch-crespo
Mibbit: http://client00.chat.mibbit.com/?server=irc.androidirc.org&channel=#ubuntu-touch-crespo
So now I am here: http://pastebin.com/RnvjqMBx
Blobs list: https://github.com/CyanogenMod/android_device_samsung_crespo/blob/cm-10.2/proprietary-blobs.txt
nyl said:
So now I am here: http://pastebin.com/RnvjqMBx
Blobs list: https://github.com/CyanogenMod/android_device_samsung_crespo/blob/cm-10.2/proprietary-blobs.txt
Click to expand...
Click to collapse
You can have tricks on the REAME-20130807 https://drive.google.com/#folders/0B_fPIBhY3pcRSVVBSDY1TjJKQXc
---------- Post added at 07:59 PM ---------- Previous post was at 07:54 PM ----------
Tygerlord said:
You can have tricks on the REAME-20130807 https://drive.google.com/#folders/0B_fPIBhY3pcRSVVBSDY1TjJKQXc
Click to expand...
Click to collapse
First step I think is trouble of data space (up to 1Go) seems too small
My goals is to modify script of saucy-preinstalled-touch-armhf.zip to
1 ) create /sdcard/tubuntu.img, ext4 image disk of up to 4 Go
2 ) mount loop /sdcard/tubuntu.img to /data/tubuntu
3 ) create symlink betwen /data/tubuntu/ubuntu /data/ubuntu
Q: Why I don't mount directly tubuntu.img to /data/ubuntu
A: deploy script use temp directories that need to be moved.
Currently process fail on creating file system tubuntu.img with code:
busybox mkfs.ext2 -F /sdcard/tubuntu.img
mkfs.ext2: lseek: Value too large for defined data type :crying::crying:
My saucy-preinstalled-touch-armhf+crespo.zip can be found here:
https://drive.google.com/#folders/0B_fPIBhY3pcRSVVBSDY1TjJKQXc
This can be installed with recovery (and should break anything). It take up to 10 minutes to install.
try making it vfat (not sure if ubuntu reads vfat), anyway something like this should be for a 4gb vfat i think.
Code:
mkdir /data/tubuntu
su
dd if=/dev/zero of=/sdcard/tubuntu.img bs=1024 count=4194340
busybox mkfs.vfat /sdcard/tubuntu.img
mount -o loop -t vfat /sdcard/tubuntu.img /data/tubuntu
Edit: http://e2fsprogs.sourceforge.net/ would be better for creating ext4 image
nyl said:
try making it vfat (not sure if ubuntu reads vfat), anyway something like this should be for a 4gb vfat i think.
Code:
mkdir /data/tubuntu
su
dd if=/dev/zero of=/sdcard/tubuntu.img bs=1024 count=4194340
busybox mkfs.vfat /sdcard/tubuntu.img
mount -o loop -t vfat /sdcard/tubuntu.img /data/tubuntu
Edit: http://e2fsprogs.sourceforge.net/ would be better for creating ext4 image
Click to expand...
Click to collapse
vfat can't support linux os...
Never mind, I've solved my problem.
Now I've a disk image tubuntu.img with saucy-preinstalled-touch-armhf expended on it.
I've /data/tubuntu to mount this image and symbolic link /data/ubuntu -> /data/tubuntu/ubuntu :good:
Next step, build kernel for crespo with mounting /sdcard/tubuntu.img and use root dir /data/ubuntu...
Tygerlord said:
vfat can't support linux os...
Never mind, I've solved my problem.
Now I've a disk image tubuntu.img with saucy-preinstalled-touch-armhf expended on it.
I've /data/tubuntu to mount this image and symbolic link /data/ubuntu -> /data/tubuntu/ubuntu :good:
Next step, build kernel for crespo with mounting /sdcard/tubuntu.img and use root dir /data/ubuntu...
Click to expand...
Click to collapse
almost done with the kernel hope it will work )
edit, find kernel here: https://drive.google.com/?tab=wo&authuser=0#folders/0B34Kseus4HL2ZEM5Mjd4YzNyREE
nyl said:
almost done with the kernel hope it will work )
Click to expand...
Click to collapse
Previous link for shared documents seems not working, this one should work better... I hope
okay i got into adb shell tried to manually mount /data/ubuntu, didn't work
Current test
nyl said:
okay i got into adb shell tried to manually mount /data/ubuntu, didn't work
Click to expand...
Click to collapse
mount -t ext4 /sdcard/tubuntu.img /data/tubuntu
This work for me, but my kernel build don't. Seem having trouble mounting system partition see attached file for dmesg.
Ok after lot of efforts I've install script creating ubuntu.img (based on saucy-preinstalled-touch-armhf.zip) on sdcard and kernel,
kernel mount correctly ubuntu.img but stay locked on google logo...
Adb is working and I retreive dmesg (see debug.txt file)
There are plenty of error and I can't understand what happen , missing knowledge on ubuntu touch process to debug that...
Since first release start on october 17 I think that developpers will be too busy for help now...
I can't progress anymore, current developments are available here
So I wait for help or more documentations on ubuntu touch process to continue...
Tygerlord said:
Ok after lot of efforts I've install script creating ubuntu.img (based on saucy-preinstalled-touch-armhf.zip) on sdcard and kernel,
kernel mount correctly ubuntu.img but stay locked on google logo...
Adb is working and I retreive dmesg (see debug.txt file)
There are plenty of error and I can't understand what happen , missing knowledge on ubuntu touch process to debug that...
Since first release start on october 17 I think that developpers will be too busy for help now...
I can't progress anymore, current developments are available here
So I wait for help or more documentations on ubuntu touch process to continue...
Click to expand...
Click to collapse
Last kernel seem produce less errors.. (but display still not working). I've message on log lxc-android-boot.log,
cp: cannot stat '/usr/lib/lxc-android-config/70-crespo.rules': No such file or directory
but I've created file (make a copy of other) and error still present, very strange!!!
Matsca09 Any news??
I have a rooted Pixel 5a running latest Android 12.
While I can write to the data partition, I would like to keep my own files and programs on the /sdcard tree.
However, it seems that I cannot execute (or link) files on the corresponding fuse filesystem.
Code:
# mount | grep /storage/emulated
/dev/fuse on /storage/emulated type fuse (rw,lazytime,nosuid,nodev,noexec,noatime,user_id=0,group_id=0,allow_other)
I tried doing 'mount /storage/emulated -o remount exec' but while it removed the 'noexec' flag, I still couldn't chmod any file to be executable.
So is there any way to re-mount or bind-mount /storage/emulated or any subtree of it to allow executable files?
Similarly, is there any way to mount it to allow links?
If that is not possible, what is the best place to create my own personal directory of executable files.
What about /data/<mydir> ?
Thanks
Files and directories on sdcardfs have fixed ownership and permissions.
But you can store your executables anywhere under /data, like /data/bin.