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
Related
Hi, I'm new to the android world. I read some tutorials about rooting switching custom roms and stuff, but one thing is not clear enogh.
If I'm using teamwin recovery and backing up the phone, where the backup is actually saved? How is that when I'm wiping the device the backup is not deleted with the other files on the device?
If I'm checking the data box and cache box what it saves?
Sorry for bad english..
Thanks!!
In recovery mode you will see " backup " and restore " , backup will create a save of your phone , in case you brick it or had a bad flash you can restore everything ( data , system... )
Sent from my GT-I9505 using XDA Free mobile app
/system is where the ROM is installed. You want to wipe that when installing ROMs.
/data if where apps you install from the Play Store are kept, and where your apps keep their data and settings and whatnot. If you don't wipe this when installing a newer version of the same ROM, then all your apps and data are kept. This is called a "dirty flash".
/cache is where apps and the Dalvik VM keep things temporarily to speed things up later. You can wipe this at any time without causing issues.
/sdcard is the "internal storage" for the user. This is where your camera stores it's pictures, where your media player stores music, where your downloads are kept. This is your storage. When installing ROMs, do *NOT* wipe this! If you do wipe it, you won't be able to install anything as there will be no files to read from!
/ext-sd is s folder that represents an external Micro SD card, if your phone supports that feature. Works similar to /sdcard.
So, to do a "clean install" or a "full wipe", you format /system, /data, and /cache.
To do a "dirty flash" you format just /system and /cache.
Typos courtesy of my Liquified LG G2 (D803).
I'm a noob here. Below is the sequence of events.
1. I was already running on low internal storage (No external sdcard)
2. Phone switches off due to low battery
3. Switched on after a full battery and got this msg-"encryption unsuccessful with 'reset all' button"
4. After few restarts stuck at logo screen
5. Tried hard reset (for factory reset)- getting E: unable to mount cache recovery log
6. Tried wiping cache system dalvik data through twrp- getting unable to mount data system cache error
Tried changing filesystem to ext4 but that didnt work. Tried checking other threads but couldnt find a similar scenario.
Thanks!
defeated24 said:
I'm a noob here. Below is the sequence of events.
1. I was already running on low internal storage (No external sdcard)
2. Phone switches off due to low battery
3. Switched on after a full battery and got this msg-"encryption unsuccessful with 'reset all' button"
4. After few restarts stuck at logo screen
5. Tried hard reset (for factory reset)- getting E: unable to mount cache recovery log
6. Tried wiping cache system dalvik data through twrp- getting unable to mount data system cache error
Tried changing filesystem to ext4 but that didnt work. Tried checking other threads but couldnt find a similar scenario.
Thanks!
Click to expand...
Click to collapse
Ext4 is the default filesystem. Change it to fat and then revert back to ext4 again. It will repair your partition.
shivamgupta1996 said:
Ext4 is the default filesystem. Change it to fat and then revert back to ext4 again. It will repair your partition.
Click to expand...
Click to collapse
Tried doing that. I get a message-
E: Error changing file system
updating partition details...
E: unable to mount /system /cache /data
ONE MORE IMPORTANT THING- twrp shows internal storage as 0 MB and no OS installed.
I think I corrupted my partitions or something to do with encryption.
defeated24 said:
Tried doing that. I get a message-
E: Error changing file system
updating partition details...
E: unable to mount /system /cache /data
ONE MORE IMPORTANT THING- twrp shows internal storage as 0 MB and no OS installed.
I think I corrupted my partitions or something to do with encryption.
Click to expand...
Click to collapse
Which partition did you tried to change?
shivamgupta1996 said:
Which partition did you tried to change?
Click to expand...
Click to collapse
I tried cache and data partitions to fat from ext4.
Dalvik cache partition is something ghat is showing as- "file system options are not available for this partition"
defeated24 said:
I tried cache and data partitions to fat from ext4.
Dalvik cache partition is something ghat is showing as- "file system options are not available for this partition"
Click to expand...
Click to collapse
Change data or system partition. If system partition shows 0mb in details section after tapping on 'change or repair fs', then change fs of 'system' partition.
But if data shows zero, then change fs of 'data'.
shivamgupta1996 said:
Change data or system partition. If system partition shows 0mb in details section after tapping on 'change or repair fs', then change fs of 'system' partition.
But if data shows zero, then change fs of 'data'.
Click to expand...
Click to collapse
Both system and data partitions (and cache too) are showing 0mb size in details. I tried changing fs but arriving at the same error.
No matter what operation I try to do, i see unable to mount system data cache error lines coming up.
i am having same prblem i tried all this bt always got error unable to repair system data cache
i tried flashing qfil method not works still stuck on boot
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
I have quite an unusual problem with my Huawei Honor Note 8 EDI-AL10.
On the Surface it boots up OK, functions OK and you would not know there are any issues.
The Bootloader is unlocked via DC-Unlocker code (confirmed by software) and the phone is rooted (confirmed).
I have TWRP installed via ADB (it's a version modded for this phone since there is not a specific version for it).
I am able to create and restore a Nandroid backup.
The phone is on on Android 7 and was trying to upgrade to Android 8, or perhaps try a custom ROM when I found that TWRP literally can't do anything with the Data folder/partition.
It can't mount it or wipe it. A Google search found a common problem which only needed for me to change to fat and then back to ext3 but like I said it let's you do nothing.
Things i have tried so far are:
Wipe/Advanced wipe/data/FAILED UNABLE TO MOUNT DATA
Wipe/Format Data/type yes, press Enter, begin erase, fails because
FAILED UNABLE TO MOUNT DATA
Wipe/Advanced wipe/repair or Change File System/Resize File
System/FAILED UNABLE TO MOUNT DATA
Wipe/Advanced wipe/repair or Repair File System/Resize File
System/FAILED UNABLE TO MOUNT DATA
Wipe/Advanced wipe/Change or Change File System/Resize File
System/FAILED UNABLE TO MOUNT DATA - Unable to convert to Ext2, Fat,
Ext3 or exFat FAILED UNABLE TO MOUNT DATA
Basically Data is bullet proof and you cant touch it.
The size of data shows as 0 in TWRP, yet it is not? It may be corrupt but I can't clear it.
Within the Android OS if I I go to Factory reset and follow it, it just takes me to TWRP then when I reboot all is unchanged.
Could it be TWRP? But all else seems OK so unlikely. I have tried other versions some claiming to be modded for this phone but they don't work - they crash the phone and then I have to reinstall the original TWRP via
the PC and ADB.
I tried following some guides to format data using ADB but it didn't work.
I have not encrypted the phone.
Any ideas anyone?
If you are suggesting anything technical please put in layman's terms.
Many thanks.
Eric.
Hey Guys,
I deleted Data in twrp and now there's nothing left in the internal storage than the twrp folder. So no system folders like /system, /music etc. I tried to flash two different roms. First there was an error occurring about the missing /system folder. Second time it worked without error message. But the ROM still won't load. And if I connect to the PC in the internal storage of the phone there's still only the twrp folder, no system folder and stuff.
So any hints how I can get the system working? I'm using twrp 3.3.1-0 and as os I tried lineageOS 16
Thx a lot
Sebastian
Can you try to press "Format Data" in the Wipe menu? Don't press Advanced Wipe and don't swipe to factory reset.
If it doesn't work you can try "repair or change file system" in Advanced Wipe