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[Q] CWM6.0.5.0:Error mounting /data while making a backup onSGS2 in bootloop withCM11

Okay, so this happened out of nowhere. My phone was perfectly fine and when I wanted to check for new messages/notifications etc he couldn't turn on. So I powered him up and he was stuck in a bootloop. I said, okay, it's not the first time. I immediately went to backup and restore option to make backup of whole system because data of some apps is valuable to me. I selected the option to backup it on external memory card. It backed up the boot image, recovery image, system partition and when it comes to data partition it restarts or show err on /data partition. I tried changing the default file formats, without success.
So, is there a way to make backup of that partition(maybe installing another cwm?) and how?
Additional info: I tried making backups on both partitions and nothing. On internal SD I have ~3300mb free and on external SD I have ~2500mb free. The reason I am using CWM c6.0.5.0 is that none of the earlier versions don't support Kit Kat based systems. Another thing is that if I select 'mount USB device' option I can see both, the internal and the external SD card on my pc. Perhaps, there is a way to recover /data from that option?
Also, when I enter the CWM at the bottom of the screen it says this:
CWM-based Recovery v6.0.5.0
Swipe up/down to change selections.
Swipe to the right for enter.
Swipe to the left for back.
E:Can't mount /cache/recovery/command
E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/log
E:Can't mount /cache recovery/last_log
E:Can't open /cache/recovery/last_log
E:Can't mount /cache/recovery/last_install
E:Can't open /cache/recovery/last_install
One more question: Can I install older version of CWM, the one that I am sure it is working(because I was using it, that's how I know)?

Updating this: motherboard was dead. So, if you are getting these errors your mobo is probably dead, specifically emmc chip. It can be soldered out and resoldered if you find replacement but its not an easy and cheap procedure.

[Q] My Internal sdcard is corrupted! Please Help!

I Think my Internal sdcard is corrupted!
Please Help! Reflashing android won't work. I think the partition is corrupted!
Device: Google Nexus 5
Original OS: Android 5.1.0_r1 (LMY47D)
Recovery: TWRP 2.8.6.0
One day I turned my phone off, and later i decided to go into recovery. I believe I went inside Advanced Options and clicked "Fix Permissions." Then I proceeded to reboot. I was busy at the time, so when I remembered about my phone, I saw that it was still booting. It had been at least 30 minutes so I knew it was in a bootloop. I decided to go back into recovery and reflash the system.img onto it. No luck. I realized I had to try flashing the entire Nexus image (using the flash-all.bat). The phone would still not turn on. I tried flashing different versions of android, and here are my findings:
Android 5.1.0_r3, 5.1.0_r1, 5.0.1: all cause my phone to not be able to boot up (stuck on the 4 color flying animation)
Android 4.4.4, CyanogenMod (cm-11-20141008-SNAPSHOT-M11-hammerhead.zip): Allow my phone to boot up.
However, after I found that I could boot onto Android 4.4.4 and CyanogenMod, I realized that I could not get access to the sdcard!
Here are my findings:
When I go to the phone's root folder, I see a FILE called "sdcard"
When I go to \storage, I see a FILE called sdcard0
When I open camera, the app crashes (possibly because it stores pictures on the sdcard).
I tried to delete these files when I had root access with CyanogenMod but the file manager said "can't delete file." When I am in recovery mode (TWRP) however, I can see the sdcard folder and the contents. Just through every system boot, the sdcard is inaccessible.
After I realized that the problem wasn't due to the data on my phone (after flashing many system images), I realized my data partition might be corrupted. Then I went to this site and followed the directions: http://forum.xda-developers.com/goo...o-repairing-corrupted-data-partition-t2577447
The e2fsck command didn't do anything as cmd said "The superblock could not be read or does not describe a correct ext2 filesystem."
Afterwards, my friend told me to try mke2fs /dev/block/platform/msm_sdcc.1/by-name/userdata
I typed that in adb shell and something happened. I started processing blocks or something. Unfortunately now, I am unable to mount the data partition at all. I am also unable to flash the userdata.img onto my phone through fastboot.
UPDATE: When I open up twrp recovery and look in the log I see the following:
E: Could not mount /data and unable to find crypto footer.
E: Unable to mount '/data'
E: Unable to recreate /data/media folder.
Updating partition details...
E: Unable to mount '/data'
E: Unable to mount '/cache/
E: Unable to mount '/persist'
...done
E: Unalbe to mount storage.
E: Unable to mount /data/media during GUI Startup.
E: Unable to mount '/cache'
Full SELinux support is present.
E: Unable to mount '/cache'
E: Unable to Mount '/cache'
E: Unable to mount /data/media/TWRP .twrps when trying to read settings file.
E: Unable to mount '/data'
MTP Enabled
Anyone know how to fix this? Please help, I owe you so much if you can solve this! Reply to me if you're able to help, I'm also new to xda so I don't really know how messages work. Thanks!

Try taking it out and putting it back in. It happened to me too.

mygoldeneye said:
Try taking it out and putting it back in. It happened to me too.
Click to expand...
Click to collapse
By sdcard I mean the internal sdcard (/storage/emulated/0). Nexus 5 does not have an external sdcard slot anyways.

So you are saying you have no apps, no widgets, nothing... /storage/emulated/0 is your main storage which INCLUDES your system files (unless you have a phone or tablet that has a separate internal SD card - would be /storage/emulated/1 ... I am guessing)

[Q] GT-I9128E running into E:failed to mount /data failed to mount /cache

hello guys,
first of all i have read many posts about the problem and have tried most of them:
secondly:- i am sorry maybe it is not the right section but my phone model doesn't exit here
the problem in details : my phone is Galaxy Gt-I9128E
it freezes on Samsung logo , tried recovery boot with power volume up home key , i see the 6 recovery options in blue and
Successfully applied multi-CSC ." in yellow
and in red :
E:failed to mount /data (Invalid argument)
can't mount '/data' (Invalid argument)
E:failed to mount /data (Invalid argument)
E:Can't mount /data/log/recovery_log.txt
E:Can't mount /cache/recovery/last_install
i have tried the 6 recovery system options
1 from ADB : adb shell : connection closed but see the device some times
2 from external storage : downloaded the firmware to external sd card but the phone shut down every time trying to install it.
3 wipe data : wiped
4 wipe cache partition : wiped
download firmware with Odin 3.7 and 3.10 : Pass reboot but the same problem
tried CWM recovery installed by Odin : Pass . device reboot and going to recovery mode but nothing happened the same old system recovery boot
any help will be appreciated
thanks

Asus TF300T Failed Install CM - Unable to partition/mount

Hello everyone
I bet you have heard this before, but I can't seem to install CM on my Asus TF300T. Here are all my specs and things I used:
Tablet: Asus Transformer Pad tf300t
Environment: Mac OS X 10.11
Asus OS: 4.1, Flashed to JellyBean 4.2.1
TWRP Version: twrp-2.8.7.0-tf300t.img
CM Version: cm-12.1-20151007-SNAPSHOT-YOG4PAO337-tf300t.zip
I followed this guide here for Installing CM:
wiki.cyanogenmod.org/w/Install_CM_for_tf300t
The only thing I can think of that I did wrong is that doing step
fastboot -i 0xb05 flash recovery twrp-2.8.7.0-tf300t.img​was that the first time i actually used the md5 file file twrp-2.8.7.0-tf300t.img.md5. I am not sure if this unmounted anything or what, but just letting you know what happened. I figured out the link i clicked was an MD5 file and not the .img file. I downloaded correct version and redid fast boot
Everything else I did as the guide mentioned. Yet, when I try to install CM with
adb push cm-12.1-20151007-SNAPSHOT-YOG4PAO337-tf300t.zip /sdcard/​
It works fine, but when I try to install through twrp, Many errors popup saying failed to mount.
E: Unable to find partition size for '/misc'
E: Unable to find partition size for '/staging'
E: Primary block device '/dev/block/mmcblk0p8' for mount point '/data' is not present|
E: Unable to mount '/data'
E: Unable to recreate /data/media folder.
E: Unable to find partition size for '/recovery'
E: Unable to find partition size for '/boot'
Updating partition detail...
E: Unable to mount '/system'
E: Unable to mount '/cache'
E: Unable to mount '/data'
...done
E: Unable to mount storage.
E: Unable to mount /data/media during GUI startup
E: Unable to mount '/cache'
Kernel does not have support for reading SELinux contexts.
E: Unable to mount '/cache'
E: Unable to set bootloader message.
E: Unable to mount '/cache'
E: Unable to mount /data/media/TWRP/. tarps when trying to read settings file.
E: Unable to mount '/data'
MTP Enabled
E: Unable to mount '/data'
E: Unable to mount '/data'
E: Unable to mount '/data'
E: Unable to mount '/data'
Error flashing zip '/sdcard/cm-12.1-20151007-SNAPSHOT-YOG4PAO337-tf300t.zip'
E: Unable to mount '/system'
E: Unable to mount '/cache'
E: Unable to mount '/data'
...done
E: Unable to mount storage
Failed​
What I can still do:1) fastboot
2) Get into JellyBean 4.2 through adb bootloader
3) adb​
What I can't do:1) Install CM
2) Apparently mount anything through trwp.​
I have checked many other solutions on here, but I can't really find any that work for me. I have used differing version of twrp, even custom versions saying old version of tarp (2.3ish) had a bug on 4.2.1 systems. But I reuploaded 2.8 since its lot newer, and it seemed maybe those bugs were fixed.
Thanks in advanced, and I hope you guys can help me. I would really love to start modifying CM for custom builds, but I always get stuck on problems such as this.

Bump for visibility.
Trying to get this to work. I would like to add some features to CM so this is quite critical. I hope someone can help.

Solved: used CM 11 not 12
Hello All,
Seems like I found the issue. But there is another issue as I progress. I try to do the ./extract-files.sh​ and it says error: device offline​If I plug my CM 11 Tablet, the device opens in file explorer, but I guess the adb cannot find it. Any solutions to this problem?

singledigit said:
Hello All,
Seems like I found the issue. But there is another issue as I progress. I try to do the ./extract-files.sh​ and it says error: device offline​If I plug my CM 11 Tablet, the device opens in file explorer, but I guess the adb cannot find it. Any solutions to this problem?
Click to expand...
Click to collapse
Hey,
Got it working now.
I made sure if USB debugging was turned on. It was, but I unchecked the notification whenever you connect to computer.
I also did used command adb shell​ to check if I could log into adb shell. It did. then I tried to ./extract-files.sh​ again, and it worked perfectly fine.
Sorry if I am flooding the Forums with perhaps meaningless information, but just wanted to keep you guys updated. Thanks for reading.

Failed to install custom rom ( ArrowOS), phone bootloops into TWRP

Tried to flash Arrow-v11.0-surya-OFFICIAL-20210319-GAPPS, it showed these red lines before saying that zip install success (was not successful, phone boots into TWRP over and over again when I tried to reboot):
E: unable to update logical partition: /odm
E: Unable to decrypt FBE device
E: failedto mount /tmp/com.android.resolv.apex to loop device /dev/block/loop16
E: unable to open loop device: /dev/block/loop17
E: unable to open loop device: /dev/block/loop18
E: unable to open loop device: /dev/block/loop19
E: unable to open loop device: /dev/block/loop120
What should I do? What can I do?
Please help

chris.lwy said:
Tried to flash Arrow-v11.0-surya-OFFICIAL-20210319-GAPPS, it showed these red lines before saying that zip install success (was not successful, phone boots into TWRP over and over again when I tried to reboot):
E: unable to update logical partition: /odm
E: Unable to decrypt FBE device
E: failedto mount /tmp/com.android.resolv.apex to loop device /dev/block/loop16
E: unable to open loop device: /dev/block/loop17
E: unable to open loop device: /dev/block/loop18
E: unable to open loop device: /dev/block/loop19
E: unable to open loop device: /dev/block/loop120
What should I do? What can I do?
Please help
Click to expand...
Click to collapse
format data (yes) - backup your internal storage before you do so

jeryll said:
format data (yes) - backup your internal storage before you do so
Click to expand...
Click to collapse
How do I do that?

As for the backup manually copying folders you need to your PC is your best and safest option. That is if your version of TWRP supports MTP. Just connect your phone to your PC when in TWRP and it'll be shown as removable storage. Though if your device is encrypted you won't be able to do this.
To fix the bootloop: on TWRP home screen choose WIPE then FORMAT DATA (bottom right) and follow the instructions.