Database Users

[Solution] Unmountable /data/ partition.

If you are using CWM 6.xx and you attempted to 'format' your sd card entirely, you may have experienced some troubles.
I formatted the /system, /data, /cache manually in CWM and found alot of problems which had arisen afterwards.
After you format these, you may notice that you can no longer mount /data/ ! This is a big problem. You cannot install new roms, or do anything because the /data/ partition cannot mount.
Solution:
1. Using Odin, flash select PDA and your stock TouchWiz based ROM. Also use the partitioning file for the i9505 device. (Make sure you tick repartition in Odin), this process may or may not work with or without the paritioning file, if your filesystem is corrupt its probably a good idea.
2. Once this is complete, reboot, you will see that the Samsung logo appears, and it may appear that things have worked, but it wont work yet.
3. You will need to install CF-AUTO-ROOT. This roots the phone, but it also seems to fix the partitioning issue.
4. Once installed you should be able to boot into TouchWiz.
5. Install Philz Advanced CWM recovery!
6. Use the feature of 'format phone for ROM'. This will format the SDCards /system/, /data/ etc PROPERLY and wont cause you any problems.
7. Install your flavor of ROM
8. Enjoyjoy
I searched the internet everywhere attempting to fix this unmountable /data/ partition, only via a french-english translated forum was I able to learn how to do this.
Further reading:
http://www.phonandroid.com/forum/recuperer-error-mounting-data-t56933.html
If it helped, please thank me
Cheers, ostenn.

ostenning said:
If you are using CWM 6.xx and you attempted to 'format' your sd card entirely, you may have experienced some troubles.
I formatted the /system, /data, /cache manually in CWM and found alot of problems which had arisen afterwards.
After you format these, you may notice that you can no longer mount /data/ ! This is a big problem. You cannot install new roms, or do anything because the /data/ partition cannot mount.
Solution:
1. Using Odin, flash select PDA and your stock TouchWiz based ROM. Also use the partitioning file for the i9505 device. (Make sure you tick repartition in Odin), this process may or may not work with or without the paritioning file, if your filesystem is corrupt its probably a good idea.
2. Once this is complete, reboot, you will see that the Samsung logo appears, and it may appear that things have worked, but it wont work yet.
3. You will need to install CF-AUTO-ROOT. This roots the phone, but it also seems to fix the partitioning issue.
4. Once installed you should be able to boot into TouchWiz.
5. Install Philz Advanced CWM recovery!
6. Use the feature of 'format phone for ROM'. This will format the SDCards /system/, /data/ etc PROPERLY and wont cause you any problems.
7. Install your flavor of ROM
8. Enjoyjoy
I searched the internet everywhere attempting to fix this unmountable /data/ partition, only via a french-english translated forum was I able to learn how to do this.
Further reading:
http://www.phonandroid.com/forum/recuperer-error-mounting-data-t56933.html
If it helped, please thank me
Cheers, ostenn.
Click to expand...
Click to collapse
I had the same issue. I think its a bug present in most recoveries at the minute. I've just taken to manually deleting the folders on the internal SD card. To stop this happening.
I remember, in one day, I had to flash the pit file and stock rom 4 times. I think this is actually quite intermittent. Sometimes it doesn't corrupt the /data partition and sometimes it does.
It's really quite damn annoying. At least there's an easy enough fix - if not time consuming.
Sent from my GT-I9505 using Tapatalk 2

[Q] Can't mount internal storage TWRP

So, things have massively escalated today and my phone appears to be soft bricked. Joy. I'll run through what happened.
1. I encrypted my phone using the built in tool in Cyanogen Mod. After it rebooted, it was glitchy and I lost a load of apps, the phone really wasn't working well. Rebooted again, but no improvement.
2. I went into TWRP (2.8.x) to restore my old backup, which was on the SD card. After the initial wipe of the internal storage, the log showed
E: Can't mount storage
Click to expand...
Click to collapse
and the restore failed.
3. I reboot and phone goes straight into recovery mode as there is no OS installed (the recovery wipes the internal storage first). Internal Storage is now showing as '0 MB'. I cannot find a way of mounting this storage anymore. Have tried factory reset (doesn't work because file system isn't mounted), and rebooting a few times but no avail.
* There seem to be some options about flashing a .pit file using odin, but I do not have this file. My phone is the Note 4 SM-N910F Model. If I can do this through Odin then maybe this will resurrect the file structure and make this storage mountable?
* There may also be another option using ADB but I still don't know what commands to use.
Any help would really be appreciated as it seems there is some possibility of a fix. That being said my hopes are not that high...

I believe I may have fixed this. I would like to keep this up here in case in helps anyone in the future, I would imagine this is only useful for people who have encrypted their device. I'm not an Android expert so can't be responsible for any damage to devices or data loss etc.
It seems that the encryption must have gone wrong somewhat and this is likely to have impacted on the file system.
Although I couldn't wipe on the device, I was able in recovery to FORMAT data (not just wipe). Go to the wipe menu, then format. After this, reboot into recovery again and you should be able to mount again. It rebuilt the filesystem too.
This should be a quick fix that may help a few people with the issues with not being able to mount the file system. I hope this can help at least one person!
I managed to restore from my backup after and phone is now working. Thanks anyway!

Is there any way to set the default storage of play store apps to the sd card?

Bootlooping out of nowhere, cant mount /data

All,
I have a SM-G35FD which is in a bad state. My phone started boot looping one morning after it was fine the night prior (3 days ago now) and I believe an auto-update may be the root cause. I am trying to find any way to access the internal memory to recover data, however I am not able to mount /data or /sdcard. I have not done much with my phone besides adding root, no CFWs ever, and no custom recoveries (prior to today). Also, I lock my phone with my thumbprint. I did not go through any encryption setup on my device.
Details about the initial problem:
It started boot looping several times and at some point it shows a black screen with red text. after letting the battery drain (because I could not force reboot) i was able to get into stock recovery and wipe the cache and reboot; this led to occasionally getting to the security screen which would freeze 1-2 seconds after logging in.
Things I have tried (19mar2017)
got into stock recovery, wiped cache, rebooted. Freezes at security login screen
Installed TWRP to get more functionatity. Was able to install TWRP
used TWRP to try to mount Data, but it will not mount (only System, Cache, EFS, and USB OTG will mount)
used TWRP to wipe Dalvik and Cache only. Errors show "cannot mount /data"
used TWRP to install CWF, freezes during extraction (4-5%)
can use ADB to run shell
UPDATE 20mar2017: Ran "Wipe -> Advanced Wipe -> *Select System Partition -> Repair or Change File System" on /system. I think this was a bad move as now I can access the /sdcard folder and its missing all data. I didn't think it would matter since the options under Wipe show "System" and "Internal Storage" separately.
Perhaps data does not mount because it needs my thumbprint? Is there anything I can try to backup the internal user memory partition and my fingerprint signatures? any way to access the user data?
Thanks to all for their time!

I found a video ( https://www.youtube.com/watch?v=VJRKuQf0puE ) which suggest that I can use TWRP to "change the filesystem" for the /System (and other) mounts in order to fix the /data mount. This can be accessed using Recovery(TWRP) -> Wipe -> Advanced Wipe -> *Select System Partition -> Repair or Change File System -> Change File System -> Options { EXT2, EXT3, EXT4, FAT, exFAT, F2FS }. Since my goal is to recover the "User Data" partition, I would not perform this on "Internal Memory" but would on the other partitions. Hopefully this would allow me to reinstall the Stock FW and allow me to login to the Internal Memory to access my files.
Does anyone know if using "Repair or Change File System" will impact the Internal Storage?

Try to reinstall the Stock Firmware Through Odin, I had this problem also when I used to own a J5... All I did was just Reinstall the stock firmware... if you want to find the stock firmware.. just go to sammobile.com

Can't flash custom rom

So, my mom's P8 lite was running low so i offered to "make it faster" I succeeded in unlocking the bootloader and flashing SuperSU at first. Now the next issue at hand was thus a custom rom. I've settled on https://forum.xda-developers.com/p8lite/development/rom-t3649258
In accordance with instructions i flashed the b895. Everything went fine until the last possible second
twrp "errored" with something like error [] errno. That's it. I rebooted and everything seemed fine. However in about the phone is now listed as hi6210sft and initially did at first too in windows explorer. I enabled developer options and usb debugging and suddenly windows was seeing it as an ALE-L21 again about phone still lists ALE-B895.
I can copy files over to internal storage "fine" but that's where everything stops. When i reboot to twrp the rom recommended one https://forum.xda-developers.com/p8lite/orig-development/twrp-t3583180 it fails to mount /data
When i try the twrp sideload way i get this (Red: red line of text, wht: white line of text)
Red: Failed to mount '/data' (invalid argument)
Red: Unable to recreate /data/media folder
Wht: ..Done
Red: Unable to mount /storage
Red: Failed to mount '/data' (invalid argument)
Wht: Full SELinux support is present.
Red: Unable to mount /data/media/TWRP/.twrps
When i go to mount i cant mount data, when i go to wipe > advanded internal storage is shown as 0 size. When i go to Wipe > advanced > Change file system to FAT that works and storage sizes are now reported (in MB), but i still can't see anything on the internal storage. Can't install anything as that damn basic EMUI doesn't even have a file manager.
Right now i'm at a catch 22 as with Huawei removing all downloads, i can't even download the stock firmware
This phone is an "old" P8 Lite, ALE-L21 european (belgian) model.
Right now the status is as follows
* fastboot & adb work
* phone boots
* twrp installed but can't mount any storage, thus can't do a damn thing
Any assistance is welcome.
I'm used to working with Nexus devices so i'm unused to all these problems

Ch3vr0n said:
So, my mom's P8 lite was running low so i offered to "make it faster" I succeeded in unlocking the bootloader and flashing SuperSU at first. Now the next issue at hand was thus a custom rom. I've settled on https://forum.xda-developers.com/p8lite/development/rom-t3649258
In accordance with instructions i flashed the b895. Everything went fine until the last possible second
twrp "errored" with something like error [] errno. That's it. I rebooted and everything seemed fine. However in about the phone is now listed as hi6210sft and initially did at first too in windows explorer. I enabled developer options and usb debugging and suddenly windows was seeing it as an ALE-L21 again about phone still lists ALE-B895.
I can copy files over to internal storage "fine" but that's where everything stops. When i reboot to twrp the rom recommended one https://forum.xda-developers.com/p8lite/orig-development/twrp-t3583180 it fails to mount /data
When i try the twrp sideload way i get this (Red: red line of text, wht: white line of text)
Red: Failed to mount '/data' (invalid argument)
Red: Unable to recreate /data/media folder
Wht: ..Done
Red: Unable to mount /storage
Red: Failed to mount '/data' (invalid argument)
Wht: Full SELinux support is present.
Red: Unable to mount /data/media/TWRP/.twrps
When i go to mount i cant mount data, when i go to wipe > advanded internal storage is shown as 0 size. When i go to Wipe > advanced > Change file system to FAT that works and storage sizes are now reported (in MB), but i still can't see anything on the internal storage. Can't install anything as that damn basic EMUI doesn't even have a file manager.
Right now i'm at a catch 22 as with Huawei removing all downloads, i can't even download the stock firmware
This phone is an "old" P8 Lite, ALE-L21 european (belgian) model.
Right now the status is as follows
* fastboot & adb work
* phone boots
* twrp installed but can't mount any storage, thus can't do a damn thing
Any assistance is welcome.
I'm used to working with Nexus devices so i'm unused to all these problems
Click to expand...
Click to collapse
Make Full Reset All data will be lost but data partition will be mounted

Format data in twrp

Ah that seems to have worked. Apparantly wipe data is different from format. Learned something new. after formatting i was able to adb push the custom rom and install via twrp. Files place on internal storage are now properly seen by TWRP. Device is up and running. Many thanks
Never too old to learn something new
Oh anyone know where i can grab the latest stock firmware for the ALE-L21 Eu model "just in case"?

Ch3vr0n said:
Ah that seems to have worked. Apparantly wipe data is different from format. Learned something new. after formatting i was able to adb push the custom rom and install via twrp. Files place on internal storage are now properly seen by TWRP. Device is up and running. Many thanks
Never too old to learn something new
Oh anyone know where i can grab the latest stock firmware for the ALE-L21 Eu model "just in case"?
Click to expand...
Click to collapse
By Firmware Finder, always best!

Euh what?

Hey i have a similar problem.Can you please elaborate what you did ?

bootlop huawei p8 lite
I have unlocked bootloader. I did root. I wanted to put a rom but by mistake I also wipe the system. now when I try to install a rom with twrp, it gives me error 7, I tried to put original rom but it tells me incompatible. trying I managed to remove the brand (I do not know how). what can I do. I keep uploading the logo

Lenovo l38011 root problem

hello,
I tried to root my Lenovo l38011
i do it with a tutorial
in the install twrp 3.2.3 I have accessed
in the root to install the super su and the other stuff its stock because of the internal memory show 0mb i try the all of
ideas to wipe data
format data
i can't install nothing
example
if i wipe data
and wipe the Dalvik, data, system
it showing failed to mount /data
/system
/cache
invalid argument
if i want to format data its show me
unable to open '' to wipe crypto key
unable to wipe data
unable to format to remove encryption
I try to search on the web but doesn't find any solution
if in the adb fastboot
in the cmd windows, I write fastboot OEM unlock
its restart the l38011 and wipe the all data
the I enter to the recovery mode and in the adb windows i am write fastboot flash unlock
what can i do now?

Hope it xda will give a solution
You should try magisk for root not supersu maybe this will help

Ansar.shaheen1 said:
You should try magisk for root not supersu maybe this will help
Click to expand...
Click to collapse
I can't install anything because i don't have internal memory its show 0mb
i try to install it already

yaniv134 said:
I can't install anything because i don't have internal memory its show 0mb
i try to install it already
Click to expand...
Click to collapse
Do you unlock the bootloader?

I have the same problem, did you solved it?

Sloved!
If you don't slove this problem to this time i can help you. You need to install china firmware v255, or restore backup from twrp if you have one or you can download it on 4pda, to restore /data dir you need to only one thing: go to "wipe" menu in twrp, mark /data partition and click on "reformat/restore partition" then chose one of types ext2/ext4 or other, then swipe to confirm and next do this thing one more time but restore original type of dir (if you have ext4 do ext2 then ext4) and you wil restore /data partition