Database Develop

storage problem

Hay.
how i can format my nexus one or clear its all earlier data . I also have 8gb sd card
waiting for reply. Thanks

Uh... do you mean a factory reset cause that is pretty easy just go to settings -> privacy -> factory reset this will wipe everything from your internal storage except the ROM and updates so you will stay on the same version that you are running now. This will not delete anything on the SD card so if you want to do that just put it in your computer and format it from there.

storage
Hay
can u more define.
is factory rest bracke my root

If by that you mean will it unroot you, then no you will stay rooted even if you factory reset.

There are two different main partitions in the phone (for partitions, think different drives under windows). The first being the /system partition. Everything in the /system partition is readable only. You are not able to modify anything in there (with a standard setup... we will delve a bit into this later). The other partition is the /data partition, which is read/write. This is where every app that you install is located (with a few exceptions which I will note below). When you do a factory reset/data wipe, it will just wipe out that /data partition so all your apps and data are gone (including any system settings.
The exception to the rules are for rooting, and certain flashable zips that put apps in the /system partition (like the google apps zip if you are running a custom ROM). So when you rooted, it put everything required for root into the /system partition (by changing it to read/write using root permissions). So if you do the factory reset, it will wipe the /data directory along with the .android_secure folder on the root of the sdcard (which is where all your apps are stored when you store apps on the sdcard).
Since the factory reset doesn't include the /system partition (otherwise you would be left without an OS to boot into), your root will remain, and otherwise, it will be just like it was when you first started up the phone.
If you want to remove root, you will have to flash a ROM (most likely a stock Android version) that doesn't include root/superuser permissions.

TWRP error "E:Unable to mount '/data'"

I have a new LG Optimus L90 (D415) with stock 4.4 ROM, and TWRP 2.8.0.0 (and previously, Philz 6.58.7) for recovery. Obviously, the phone is rooted and now has an unlocked bootloader....
My problem is that neither recovery will back up (or even mount) "/data". Note that I put that in quotes because, without having "/storage/sdcard" or something in front of it, I presume that it's an internal folder and not something to do with the external SDcard.
My first guess would be a problem with encryption, because both the phone and the external SD are using it -- and I never get asked for the password. Either way, the actual error in TWRP says "E: Unable to mount 'data'", while Philz says it can't access /data/philz-touch for the .ini file.
I've made several Google expeditions to find the answer, and have come up empty-handed with all of them. I've seen all kinds of fixes, from claims that I have to run chkdsk against the SDcard, to backing up the entire /data partition with a tar file and reformatting it with command line nightmares.
I'll do what I have to in order to fix this, but I'd rather not embark on an experimental goose chase. Any ideas?

I have this same problem. But only for wiping and flashing.
I have no idea for fix if backup also not working !! (Noob)
1.TWRP click backup. Select all except SDcard.
Finish backup.
2.go to Wipe menu.>advanced wipe>select all except System and Sdcard.
Wipe.
(It will skip the error files)
3.Install menu. Select ROM to flash.
Was what I did.

fear2433 said:
I have this same problem. But only for wiping and flashing.
Click to expand...
Click to collapse
I'm not flashing anything, yet. First I need to make a backup of the entire phone (not including the SDcard). That way, if something goes wrong, I can just restore my old, working configuration -- all at once -- and start over.
I can back up and restore apps individually, using Titanium Backup. But what I need here is a Nandroid-type backup... and that generally has to be done from the recovery partition. There is one other way to backup everything, using a laptop/PC and ADB. But I've never tried it, and it wouldn't protect against a ROM meltdown.

Solved, somewhat...
So I did some further experimentation concerning this error. I did a test run to install CyanogenMod, and I found that I couldn't even factory reset certain partitions because of these "Unable to mount /data/" type errors.
What was ultimately the problem? The encryption. Once I decrypted everything, TWRP was able to see, mount, and backup, those partitions.
But I was under the impression that TWRP handles encryption, e.g. asking for the password, or some such. I mean, how can you do a Nandroid-type backup on a phone, if no recovery can mount those kinds of partitions?
So, for the record: "E:Unable to mount" was definitely due to the encryption being turned on for my internal storage. Thus the solution (so far) is to decrypt storage. A wretched solution, but at least it works for the time being.
BTW, In furtherance of this research, I formatted my internal SDcard to NTFS, just to make sure it wasn't misaligned or whatever when it was just FAT32. And I discovered that NTFS takes forever to format (32GB on the order of a couple hours)., FWIW.

The plot thickens. It may not be sufficient just to undo encryption, there may be something wrong with the way that partition was created, or otherwise is constructed.
Even though I now am able to mount /data, I'm not able to format it.... in TWRP it says something like "unknown filesystem 'auto'".
But there is a thread here that describes using Philz recovery to unmount and then format this mess, and I'm about to try it, I just have to flash Philz in place of TWRP. Now let's hope this version works without issues, because I'd have little recourse if things go bad there.

[Q] Fix missing space (23.03GB vs. 64GB), but keep data

I've run in to the problem some other people were having too. A problem, where after fastboot flashing userdata.img (from stock factory image), I'm left with 23.03GB of storage on my device, even though it's a 64GB model.
I've Googled the problem, and people suggest running "fastboot format data" to fix it. But of course that will wipe all my settings and so forth. My question is if I can back up the data partition using TWRP onto an OTG device. Then run "fastboot format data" and finally restore data again using TWRP.
Would that work? And would it even fix the problem of the missing space.
For reference, the issue has previously been discussed here:
http://forum.xda-developers.com/nexus-6/help/nexus-6-64gb-23gb-free-space-t2953636

stokholm said:
I've run in to the problem some other people were having too. A problem, where after fastboot flashing userdata.img (from stock factory image), I'm left with 23.03GB of storage on my device, even though it's a 64GB model.
I've Googled the problem, and people suggest running "fastboot format data" to fix it. But of course that will wipe all my settings and so forth. My question is if I can back up the data partition using TWRP onto an OTG device. Then run "fastboot format data" and finally restore data again using TWRP.
Would that work? And would it even fix the problem of the missing space.
For reference, the issue has previously been discussed here:
http://forum.xda-developers.com/nexus-6/help/nexus-6-64gb-23gb-free-space-t2953636
Click to expand...
Click to collapse
Just so its clear the fastboot format does the trick. (I also did fastboot and vol scrolled to recovery and did a full wipe before the format)(that was prob overkill)
fastboot format userdata
fastboot format cache
fastboot reboot
I've never done that with twrp. I usually just dump my whole SD card to a hard drive then start fresh. Its a reasonable pain to ensure there are no problems.
Also wouldn't you have been totally wiped anyway if you were going back to stock? Have you been using it with 23gb for a while?

No, haven't been using it for long like that. Only a few days actually.
It's not that I have a lot of files, but I do have a lot of settings and app settings. I know I could probably use Titanium Backup to back that stuff up, but I don't trust that method do get everything and not mess something up.
One more question though. Why format cache too? I saw that suggested in the thread I referenced. But isn't it enough to format data? I guess it makes no difference really, but I'm trying to learn in the process too.

stokholm said:
I've run in to the problem some other people were having too. A problem, where after fastboot flashing userdata.img (from stock factory image), I'm left with 23.03GB of storage on my device, even though it's a 64GB model.
I've Googled the problem, and people suggest running "fastboot format data" to fix it. But of course that will wipe all my settings and so forth. My question is if I can back up the data partition using TWRP onto an OTG device. Then run "fastboot format data" and finally restore data again using TWRP.
Would that work? And would it even fix the problem of the missing space.
Click to expand...
Click to collapse
Yes and no.
Let me explain;
The first problem, which may or may not actually *be* a problem, is whether or not recovery will PERMIT a backup to an OTG. Assuming that it does, it unfortunately will only backup everything on the data partition BESIDES the "media" directory (where the "internal SD card" can be found).
To work around this, perform your backup TO the internal storage, then reboot back to Android, copy *everything" from the "internal storage" path to your computer (which will include the "backup" directory, whatever it happens to be called with the recovery you prefer). Then perform the fastboot format on the data partition, boot into Android skipping all the signin junk, copy everything BACK to the internal storage, reboot into recovery again, and restore it.
ALTERNATIVELY, and probably much easier (definitely much faster, since it should complete within a few seconds)...
I *believe* that most recoveries should include the resize2fs command (though I've never had an actual need for this, so haven't actually tested it), so via ADB into your recovery.....
Code:
umount /data
resize2fs /dev/block/platform/msm_sdcc.1/by-name/userdata
should do the trick.
NOTE HOWEVER, it is generally recommended to backup any partition where you are resizing a filesystem PRIOR to resizing it.
HAVING SAID THAT, I've run resize2fs hundreds of times on hundreds of systems, and never had an issue with a grow operation.
Running resize2fs without a "size" parameter will grow the filesystem to the size of the partition. The partition table still holds the correct size, which is why "fastboot format" fixes the issue.

That was a great explanation, @doitright. Thank you for that. I will try resize2fs at some point.

stokholm said:
No, haven't been using it for long like that. Only a few days actually.
It's not that I have a lot of files, but I do have a lot of settings and app settings. I know I could probably use Titanium Backup to back that stuff up, but I don't trust that method do get everything and not mess something up.
One more question though. Why format cache too? I saw that suggested in the thread I referenced. But isn't it enough to format data? I guess it makes no difference really, but I'm trying to learn in the process too.
Click to expand...
Click to collapse
Resizef2s sounds relatively painless, but does again, as doitright says, require caution by backing up before.
About the cache thing. I think to do a full format, data and cache are on different blocks, so that might be why. But then again the SD card is mounted in /data/media so maybe only format data is needed and the cache is to help with something else or just to be cautious, I don't know.
Now I wonder (and this can be searched here in xda) if TWRP back up data is /data/data or /data minus /data/media? Because fastboot format data I think is all of data i.e. /data. This is worth knowing for the future. Especially since we are flashinging things to our phones and whatever else.

MunkinDrunky said:
Now I wonder (and this can be searched here in xda) if TWRP back up data is /data/data or /data minus /data/media? Because fastboot format data I think is all of data i.e. /data. This is worth knowing for the future. Especially since we are flashinging things to our phones and whatever else.
Click to expand...
Click to collapse
ALL recovery backups are /data/* EXCEPT /data/media, being "backed up" to /data/media/something.
It simply cannot be implemented any other way for devices without separate storage devices, otherwise the backup would back up previous backups, which would be just plain wasteful.
The /cache partition is practically irrelevant. There is quite literally NO REASON to ever worry about it. No reason to wipe it, no reason for format it unless it somehow becomes corrupt.

It doesn't seem like resize2fs is included in TWRP.

stokholm said:
It doesn't seem like resize2fs is included in TWRP.
Click to expand...
Click to collapse
The resolution really is as simple as you originally thought. Its a common issue I've seen a hundred times on the nexus 5.
Take a full TWRP backup and then copy your entire sdcard to PC.
Format data
Boot into android and do initial set up.
Copy sdcard backup back to device whilst booted into android
Restore TWRP backup

You can use the file manager in TWRP to copy your entire sdcard to USB-OTG and copy it back. Personally, I find this easier than copying to PC.

adrman said:
You can use the file manager in TWRP to copy your entire sdcard to USB-OTG and copy it back. Personally, I find this easier than copying to PC.
Click to expand...
Click to collapse
The reason I said to copy it to PC via android was that using MTP or adb in recovery will break the sdcard permissions, when it is copied back. If you're confident OTG in TWRP works differently to adb and MTP in TWRP, cool. I just haven't tested it myself so won't suggest it.

rootSU said:
The reason I said to copy it to PC via android was that using MTP or adb in recovery will break the sdcard permissions, when it is copied back. If you're confident OTG in TWRP works differently to adb and MTP in TWRP, cool. I just haven't tested it myself so won't suggest it.
Click to expand...
Click to collapse
I used OTG via TWRP's file manager, when I wiped to decrypt and everything came back properly. I would assume that would be the case here as well.

adrman said:
I used OTG via TWRP's file manager, when I wiped to decrypt and everything came back properly. I would assume that would be the case here as well.
Click to expand...
Click to collapse
Excellent

rootSU said:
Excellent
Click to expand...
Click to collapse
Channeling Mr. Burns? [emoji1]

adrman said:
Channeling Mr. Burns? [emoji1]
Click to expand...
Click to collapse
Always, aren't you?

From within TWRP there is an easy way to do this even after you have your phone all setup. This issue always happens on my Nexus 5 and Nexus 6.
I did this without doing a backup and after my phone has been used on marshmallow for a week or so.
Steps from within TWRP:
1. Wipe > Advanced Wipe
2. Select the Data partition.
3. Select Repair or Change File System
(Notice the Partition Size)
4. Select Resize
(Wait and shortly after see the partition size be up to full size.)

This doesn't appear to work on 6.0.1 custom Rom with systemless SU 2.61... gave me a bad partition error.
Guess I will have to wipe.
maamdroid said:
From within TWRP there is an easy way to do this even after you have your phone all setup. This issue always happens on my Nexus 5 and Nexus 6.
I did this without doing a backup and after my phone has been used on marshmallow for a week or so.
Steps from within TWRP:
1. Wipe > Advanced Wipe
2. Select the Data partition.
3. Select Repair or Change File System
(Notice the Partition Size)
4. Select Resize
(Wait and shortly after see the partition size be up to full size.)
Click to expand...
Click to collapse

I have come across this thread. Here is what worked for me. (in case somebody needs it in the future)
1. Boot into twrp, type
Code:
adb shell
2. list the mounted partitions
Code:
df
You should see
Code:
df
Filesystem 1K-blocks Used Available Use% Mounted on
tmpfs 1507020 24 1506996 0% /dev
tmpfs 1507020 24 1506996 0% /tmp
/dev/block/mmcblk0p38
253920 264 248416 0% /cache
/dev/block/mmcblk0p42
24143612 23590364 536864 98% /sdcard
/dev/block/mmcblk0p42
24143612 23590364 536864 98% /data
/dev/block/mmcblk0p41
2015408 1965276 33748 98% /system
3. unmount /data and /sdcard
Code:
umount /dev/block/mmcblk0p42
umount /dev/block/mmcblk0p41
4. run
Code:
e2fsck -f /dev/block/platform/msm_sdcc.1/by-name/userdata
resize2fs /dev/block/platform/msm_sdcc.1/by-name/userdata
now you should see:
Code:
df
Filesystem 1K-blocks Used Available Use% Mounted on
tmpfs 1507020 24 1506996 0% /dev
tmpfs 1507020 24 1506996 0% /tmp
/dev/block/mmcblk0p38
253920 264 248416 0% /cache
/dev/block/mmcblk0p42
57306748 23598452 33691912 41% /data
/dev/block/mmcblk0p42
57306748 23598452 33691912 41% /sdcard
5. reboot, you are done

Is it possible to mount data partition on PC or USB to recover data

Is it possible to mount data partition on PC or USB to recover data?
Edit: I meant userdata partition

I have tried backing up data partition using TWRP, but it prompted me that pictures and downloads will not be backed-up!
Isn't the data partition that holds my camera and download folder?

I am looking for a tool or and app that can let me take a disk image of internal SD partition, or create a whole image of my phone; so that I can use data recovery in my PC.

Making Dump Files Out of Android Device Partitions
have u try this

Thanks I have tried it but when I execute
Code:
noblelte:/ # dd if=/dev/block/sda17 of=/sda17.img
Gives me
Code:
dd: /sda17.img: Read-only file system
Just to be sure : I ran the adb code while the phone is on normally not in TWRP.

I also ran the code in TWRP terminal, while connecting a USB and mounting it.
It created the image inside the USB , however it stopped at 4GB saying the file is too large.

SilverDove said:
I also ran the code in TWRP terminal, while connecting a USB and mounting it.
It created the image inside the USB , however it stopped at 4GB saying the file is too large.
Click to expand...
Click to collapse
Are you just wanting to back up pictures, download folder, etc etc? Backing up the data partition the way you are is pointless as you're just accomplishing what twrp already does. Data partition is apps, system configurations, texts, calls, etc. Not pictures you've taking, download folder, etc.
And is there a reason you want an img file? Seems pointless to me when you can just copy it all over by drag and drop or adb pull the internal storage lol

I want to make a userdata partition image because it holds the camera album I deleted by mistake. I want to take the image and try to recover the deleted files using PC recovery software.
I found out that my problem was the 4GB limit of FAT32, so I formatted my USB flash memory using both exFat and ext4 and recovered the partition using TWRP terminal with the code above.
However I am still unable to read the image through Linux Reader and I can't attach the image as VHD.
Is what I am doing is useless? Because it came to my mind that if the recovered userdata partition is encrypted I will not be able to opened it, however, TWRP can browse the files so I guess it is not encrypted.

SilverDove said:
I want to make a userdata partition image because it holds the camera album I deleted by mistake. I want to take the image and try to recover the deleted files using PC recovery software.
I found out that my problem was the 4GB limit of FAT32, so I formatted my USB flash memory using both exFat and ext4 and recovered the partition using TWRP terminal with the code above.
However I am still unable to read the image through Linux Reader and I can't attach the image as VHD.
Is what I am doing is useless? Because it came to my mind that if the recovered userdata partition is encrypted I will not be able to opened it, however, TWRP can browse the files so I guess it is not encrypted.
Click to expand...
Click to collapse
You may need to convert the file type of the img using simg2img, make_ext4fs, etc
You can see what the file system type of the img you have by running:
file blahblah.img
But still don't think you're going to recover them but possibly lol never tried as I sync everything to a cloud

SilverDove said:
Is it possible to mount data partition on PC or USB to recover data?
Edit: I meant userdata partition
Click to expand...
Click to collapse
For backing up app data, I'm more of a Titanium Backup person myself and for backing up partitions I generally prefer TWRP, but there are also apps for backing up all the different partitions as well. This is just one. Never tried it, but Wanam is a much trusted developer in the XDA community for Samsung devices.
https://play.google.com/store/apps/details?id=ma.wanam.partitions
NOTE: You can always save these backups to a USB OTG device if you need to as well. That's what I do with my Titanium Backup app data files and the information is with me all the time hanging on my key chain.(More info about that under "No SD Card Slot" on this post HERE.) This information can of course always be copied to a PC too.

unable to mount internal storage due to encryption

Long story short, I've been trying to get into my internal storage via TWRP but its saying that there are 0MB in the internal storage and that there is nothing in the sdcard folder
I've tried formatting it, hasn't worked
I've tried changing the format to FAT and then back to EXT4
then after that didn't work i tried the same but with EXT2 , it showed the amount of storage but still didn't let me see what was inside of the sdcard folder, whenever i'd go in there its just completely empty
Can I please have some help with this, I've been stuck on this for a couple hours now

Ouch! Please don't say that you just formatted userdata (/data).
You've just killed all your data on your phone.
No, I'm not that experienced with TWRP and I don't know which versions under which circumstances it can mount userdata.
I use custom recoveries and just presume that I can't mount userdata in them.
In the normal system (which mounts and decrypts) I use normal tools to sync or backup.

Renate said:
Ouch! Please don't say that you just formatted userdata (/data).
You've just killed all your data on your phone.
No, I'm not that experienced with TWRP and I don't know which versions under which circumstances it can mount userdata.
I use custom recoveries and just presume that I can't mount userdata in them.
In the normal system (which mounts and decrypts) I use normal tools to sync or backup.
Click to expand...
Click to collapse
I didn't format data it self i meant that i factory reset it, sorry i should of been a lot more clear on that

Oh, ok.
Well, in any case, if it's encrypted you need to mount it not with a simple "mount" command but something fancier using dm.
They don't try to make it easy to do.
Unless you're destroyed your system and you're trying to recover your data, whatever you're trying to do is best done in the normal system.

never mind i found a fix for it
well not really a fix just a way around it
thanks for the help ^^

SoftieIsVibing said:
never mind i found a fix for it
well not really a fix just a way around it
thanks for the help ^^
Click to expand...
Click to collapse
I had the same issue so I flashed a raw firmware after taking full system backup. Now TWRP is working fine.