Develop Bugs

[Q] Failed to mount /data (Invalid Argument) Error

While trying to flash back to stock from a custom ROM, I made it to the Samsung splash logo, and got stuck there. Went into recovery and saw the following:
E:failed to mount /data (Invalid Argument)
can't mount '/data' (invalid argument)
[The Applied CSC code is ATT and successfully applied multi-CSC stuff appear in Manual Mode]
E:failed to mount /data (Invalid Argument)
can't mount '/data' (invalid argument)
E:failed to mount /data (Invalid Argument)
Now what must I do to get everything back to the normal? Please help!

Can someone really help me with this scenario? I seriously need help!

Try flashing your stock firmware via Odin. What build are you currently on?

Factory/Data reset gone wrong

A Friend gave me his galaxy s3 since he recently upgraded to a note 4, so naturally i wanted to wipe everything on it and i figured the fastest way would be me doing a factory rest. . so the phone does its thing then reboots into recovery with the image of the android guy on his back with a red cation thingy above him.
i get the following messages below the blue option menu thing that you scroll with using the volume rocker. :
E: failed to mount /data (invalid argument)
cant mount '/data' (invalid argument)
E: failed to mount /data (invalid argument)
and others like it all saying it cannot mount /data
i tired using kies to have an emergency firmware update but ask me for a code.
would be installing a custom recovery and downloading a custom rom fix this or not ?
please help

Unable to mount storage in TWRP, unable to open '' to wipe crypto key

Hello everybody,
I'm facing an issue with my phone. I was running Fulmics Rom 6.1 on my LG G3 for a few days, when, this morning, I woke up to find my device caught in a bootloop. I had a recent TWRP backup, so I tried to restore it, but it failed with the error : "Unable to wipe System".
I tried to wipe everything but my SD Card and got :
Code:
Failed to mount '/data' (Invalid argument)
Failed to wipe dalvik
Updating partition details...
Failed to mount '/system' (Invalid argument)
Failed to mount '/data' (Invalid argument)
Failed to mount '/cache' (Invalid argument)
I tried to use "Format Data" in TWRP Wipe Section, but got :
Code:
[B]Unable to open '' to wipe crypto key[/B]
Unable to wipe Data.
[B]Unable to format to remove encryption.[/B]
Updating partition details...
Failed to mount '/system' (Invalid argument)
Failed to mount '/data' (Invalid argument)
Failed to mount '/cache' (Invalid argument)
Flashing the Rom again fails as well as it stays stuck at this step :
Code:
Install new system
Extract:/tmp/unpackbootimg
I'm using TWRP 3.0.0-0.
Any idea about what I could do next ?
Thanks a lot.

FIRE TV 2 BOOT LOOPS,Thanks for telling me the details of the repair steps

my model is FIRE TV 2, it boot loops (amzon logo
then will eventually display this twrp screen
and Runing OpenRconveryScript screen then will
loop).
OpenRconveryScript screen:
failed to mount '/data'(Invalid argument)
Unable to recreate /data/media folder.
Updating parititon details...
Failed to mount '/data'(Invalid argument)
...done
Unable to mount storage
full SELinux support is present.
Running boot script...
Done.
Unable to mount /data/media/TWRP/.twrps
Runing Recovery Commands
Failed to mount '/data'(Invalid argument)
Formatting Cache using make_ext4fs...
Failed to mount '/data'(Invalid argument)
Done processing script file
Online wait for guidance

maleclub said:
my model is FIRE TV 2, it boot loops (amzon logo
then will eventually display this twrp screen
and Runing OpenRconveryScript screen then will
loop).
OpenRconveryScript screen:
failed to mount '/data'(Invalid argument)
Unable to recreate /data/media folder.
Updating parititon details...
Failed to mount '/data'(Invalid argument)
...done
Unable to mount storage
full SELinux support is present.
Running boot script...
Done.
Unable to mount /data/media/TWRP/.twrps
Runing Recovery Commands
Failed to mount '/data'(Invalid argument)
Formatting Cache using make_ext4fs...
Failed to mount '/data'(Invalid argument)
Done processing script file
Online wait for guidance
Click to expand...
Click to collapse
Can you pop in a USB flash drive or micro sd with a pre rooted ROM and flash?

Update to TRWP 3.4.0-0 failed - factory reset?

TWRP won't start after updating from 3.3.. to 3.4.0-0 using fastboot. Output includes "Failed to mount '/data'" - see following post.
I guess because I accidentally ran fastboot unlock although it was already unlocked. (The TWRP website fastboot update procedure starts right back with installing the tools and I jumped in at the wrong place)
Tried installing previous TWRP version but no dice.
Any ideas?
I did a TWRP backup before all this. Not exactly sure where it's located but would like to recover it if possible. Will a factory reset likely overwrite it?
Lenovo P2 LineageOS 17.1 Kuntao

Output when booting to recovery:
Code:
Could not mount /data and unable to find crypto footer.
Failed to mount '/data' (Invalid argument)
Unable to recreate /data/media folder.
Updating partition details...
Unable to mount storage
Failed to mount '/data' (Invalid argument)
fs_mgr_mount_all
Full SELimux support is present.
Unable to mount /data/media/TWRP/.twrps
Running recovery commands
Failed to mount '/data' (Invalid argument)
Formatting cache using mke2fs...
Done.
Done processing script file
Renamed stock recovery file in /system to prevent the stock ROM from replacing TWRP.