failed to mount system - Miscellaneous Android Development

Hello everybody,
since I did a bad flashing, when I start the phone in recovery mode I get the following errors:
Code:
E: failed to mount /efs (No such file or directory)
E: failed to mount /system (No such file or directory)
# Manual Mode#
E: failed to mount system (No such file or directory)
E: Can´t mount /system
E: failed to mount /cache (No such file or directory)
E: Can´t mount /cache/recovery/last_recovery
E: failed to mount /data (No such file or directory)
E: Can´t mount /data/log/recovery:log.txt
E: failed to mount /system (No such file or directory)
E: failed to mount /cache (No such file or directory)
E: Can´t mount /cache/recovery/log
E: Can´t open /cache/recovery/log
E: failed to mount /cache (No such file or directory)
E: Can´t mount /cache/recovery/last_log
E: Can´t open /cache/recovery/last_log
E: failed to mount /cache (No such file or directory)
E: Can´t mount /cache/recovery/last_install
E: Can´t open /cache/recovery/last_install
E: failed to mount /cache (No such file or directory)
I have tried to wipe cache partition and do a data/factory reset, but without any luck.
When I try to do a data/factory reset it says:
-- Wiping data...
Formatting /data...
E:format_volume: make_extf4s failed on /dev/block/mmcblk0p12
Formatting /cache...
E:format_volume: make_extf4s failed on /dev/block/mmcblk0p8
Data wipe complete
E:failed to mount /cache (Block device required)
E:Can´t mount /cache/recovery/log
E:Can´t open /cache/recovery/log
E:failed to mount /cache (Block device required)
E:Can´t mount /cache/recovery/last_log
E:Can´t open /cache/recovery/last_log
E:failed to mount /cache (Block device required)
E:Can´t mount /cache/recovery/last_install
E:Can´t open /cache/recovery/last_install
E:failed to mount /cache (Block device required)
I tried to flash again from the sdcard, same errors appear. Lauching a file manager from sdcard is impossible too.
Concerning ADB, the phone is detected, but flashing give an error. Odin doesn't detect the phone.
Anybody can help me ?
Thanks in advance

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Whenever I boot my device, I get to see the Datawind start screen and that's where it stays. Nothing happens.
When I boot my device with the volume button pressed, I get to see the menu of CWM based recovery v6.0.1.5.
Immediately it gives errors:
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
If I try to wipe the cache partition I get:
--Wiping cache...
Formatting /cache...
E:format_volume: make_extf4fs failed on /dev/block/nandh
Cache wipe complete.
and for ----- wiping data...
Formatting /data...
E:format_volume: make_extf4fs failed on /dev/block/nande
data wipe complete.
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
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It did not help.
And I cannot find a ROM that I know will work for my Tab.
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[Q] bootloop plus a problem with the cache

My phone somehow got stuck in a boot loop and I can't fix it. I don't know what to do. I cant get pass the start up animation no matter what I do.
I've tried the fast boot commands to flash and keep getting the error (i dont really know alot about flashing and never done it before but the that what i found suggested in the web..)
FAILED < remote: flash write failure >
I've tried the flash-all.bat file, but the lock state goes back to LOCKED when it reboots the device and I get the error
not supported on lock device
I can unlock the device when I type fastboot oem unlock, but if the device is restarted it goes back to LOCKED.
I've tried recovery mode and I see the below statements:
E:failed to mount /cache (Invalid argument)
E:Can't mount /ache/recovery/log
E:Can't open /ache/recovery/log
E:failed to mount /cache (Invalid argument)
E:Can't mount /ache/recovery/last_log
E:Can't open /ache/recovery/last_log
E:failed to mount /cache (Invalid argument)
E:Can't mount /ache/recovery/last_install
E:Can't open /ache/recovery/last_install
E:failed to mount /cache (Invalid argument)
I've tried wipe data/factory reset
--Wiping data...
Formatting /data...
E:failed to mount /cache (Invalid argument)
Formatting /cache...
E:failed to mount /cache (Invalid argument)
E:Can't mount /ache/recovery/log
E:Can't open /ache/recovery/log
E:failed to mount /cache (Invalid argument)
E:Can't mount /ache/recovery/last_log
E:Can't open /ache/recovery/last_log
E:failed to mount /cache (Invalid argument)
E:Can't mount /ache/recovery/last_install
E:Can't open /ache/recovery/last_install
Data wipe complete
E:failed to mount /cache (Invalid argument)
E:Can't mount /ache/recovery/log
E:Can't open /ache/recovery/log
E:failed to mount /cache (Invalid argument)
E:Can't mount /ache/recovery/last_log
E:Can't open /ache/recovery/last_log
E:failed to mount /cache (Invalid argument)
E:Can't mount /ache/recovery/last_install
E:Can't open /ache/recovery/last_install
E:failed to mount /cache (Invalid argument)
It sounds like your emmc is fried. not being able to lock/unlock your bootloader is a classic symptom
Sent from my Nexus 5 using XDA Free mobile app
and what do i do with that?
yyelf said:
and what do i do with that?
Click to expand...
Click to collapse
Get a new device/motherboard swap
thanks....:crying::crying::crying:

My Galaxy Ace has a possible brick (failing to mount directories) Any help?

I have rooted my phone, and I have installed custom ROMs, but afterwards, it took AGES to boot, so I decided to boot into recovery mode, and it said the following in the log:
-- Appling Multi-CSC --
E:failed to mount /system (Invalid Argument)
E:failed to mount /system (Invalid Argument)
E:failed to mount /cache (Invalid Argument)
E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/log
E:failed to mount /cache (Invalid Argument)
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Samsung galaxy gt-s7275r e:can't open /cache/recovery/last_log

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E: Failed to mount /cache (Invalid argument)
Can't mount '/cache '(Invalid argument)
E: Can't mount /cache/recovery/Last_recovery
E: Failed to mount /data (Invalid argument)
E: Can't /data/log/recovery_log . txt
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E: Can't open /cache/recovery/log
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J710MN Stock rom "No Command"

I can use every rom just fine. However, I need to flash stock rom but when I boot to stock rom it says "No Command". After a minute or so, the screen changes to installing system update, which flashes to black every second.
Stock firmware that I flashed is "J710MNUBS4CSF1_J710MNICE4CSD4_J710MNUBS4CSG2_HOME.tar.md5"
When I press Power + Vol up in the "No command" screen, this is what the text reads:
apping: device or resource busy
E:[libfs_mgr]Couldnt create verity device!
E: Failed setting up dirty target
[omc-res-permission] fail to mount /system as rwE: [libfs_mgr] Error creating device mapping: device or resource busy
E:[libfs_mgr] Couldn't create verity device!
E: Failed setting up dirty target
[omc-res-permission] fail to mount /system as rwE:[libfs_mgr]Error creating device mapping: Device or resource busy
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E:Failed setting up dirty target
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E: failed to mount /cache (Invalid argument)
E: failed to mount /cache (Invalid argument)
E: failed to mount /cache (Invalid argument)
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E: can't open /cache/recovery/log: (invalid argument)
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E: can't mount /cache/recovery/last_log
E: can't mount /cache/recovery/last_log: invalid argument
E: failed to mount /cache (invalid argument)
E: can't mount /cache/recovery/last_install
E: can't open /cache/recovery/last_install:invalid argument

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