unable to mount system - YU Yureka Q&A, Help & Troubleshooting

im not able to mount system, data etc... my phone was on charging as soon as i unplug i got lots of fc's after that phone reboot and got stuck at bootanimation, after i took out the battery and tried to switch on the phone it stuck at yu logo. in recovery (twrp) cant flash or wipe anything. i was on cm13 24th build

Was it working fine with CM13 ? How many successful reboot have you had ?

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[Q] Unable to mount /cache - Stuck at CM boot Screen

Specifics first -
Device: VS980 (VZW LG G2)
Recovery: TWRP 2.6.3.2
ROM: CM 10.2 12/6 Nightly
I had a random reboot while trying to answer a phone call today. Its happened before. So I figured I would reflash the nightly to see if it would correct itself. I entered recovery from the power button menu. I tried to flash the nightly from the CyanDelta folder (tinkering around earlier, downloaded it, detected rom, and deleted from cmupdater file). For some reason I decided to wipe cache and dalvik after installing. The phone never rebooted after that. I proceeded to try and power up only to be faced with a constant CM boot screen (I knew something was wrong when I notice how long it took to get to the CM screen). I was able to get back into recovery to try and flash the 11/30 nightly, which I hadn't touched. After flashing, I noticed the "Unable to mount /cache". So instead of trying to fight with my phone to get back into recovery, I flashed a backup. It also displayed the "Unable to mount /cache". My phone was in recovery where I performed a factory reset. ADB was recognizing it and receiving commands. I unplugged it to see if I could get into download mode. Now I cant get it back into recovery. When I do "adb devices" it shows up as "unauthorized". Where do I go from here? I have very limited adb experience. 

[help][urgent] yureka stuck in boot animation of any rom that i flash,cant load up os

I rooted my phone and installed cm13(Exodus Rom) on my yureka plus...but then it was rebooting randomnly
then i installed crDroid cm13 based rom which was working fine then it rebooted by itself and i cudnt get into fastboot or recovery
i somehow found a way to get back into the fastboot nd flashed the recovery
but every time i tried to wipe or mount something i used to get "E:failed to mount /system"
i somehow fixed that
Now whatever rom i flash it gets stuck in its boot animation
it doesnt load up the OS
please help :crying::crying::crying:
I can't even flash my yureka by PC as it is not being detected by adb drivers

Stuck on bootloop - restarts even when in recovery/fastboot

I have installed nuclearom 6. the problem started after i got fingerprint hardware not found error. Suddenly the phone got into bootloop. The phone shows 'zuk' and 'powered by android ', followed by 'radioactive kernel' screen. I cant turn off the phone unless it runs out out of battery. I can go into twrp recovery, however the phone reboots automatically after 5-6 seconds in recovery. The same with fastboot also.
I have tried wiping delvik cache, cache, system (yes the os) and data.
Npthing worked. Please help.
Hope this can help https://forum.xda-developers.com/zuk-z1/help/z1-bugs-t3666821

Failed to mount any partition / Kernel Panic / boot loop / Galaxy S5 klte

Phone was running stock os. I rebooted my phone and it's now stuck in a boot loop. I tried to reinstall it through Smart Switch and it's still stuck in a boot loop.
After the reinstall it goes to "Installing system updates" and almost right after it stops and shows "Erasing" for a second. It then reboots a few times and it usually goes to the Kernel Panic error but it has also gone to Manual Mode once to try and install the updates but then it fails to mount any partition.
I've tried installing Lineage OS (I used it before I went back to stock os) through TWRP and I also got the same errors. I was unable to mount any partitions and left the phone without a battery for a few a day.
When I tried again just now I was able to mount the partitions but installing Lineage OS or stock OS was still not possible and it gave me the same errors again.
Is there anything I can do to fix this?
First error after boot loops: imgur.com/a/ZOTfR
Errors on TWRP: imgur.com/a/qYqsY
Manual install in recovery: imgur.com/a/YHeyS
Another error: imgur.com/a/xPHdm
EDIT: After trying for three days, it suddenly booted. I can boot to the OS but the phone still crashes and boot loops every time. If I go to recovery and wipe cache it will boot again. What can I do to stop it from crashing and going back to boot loops?

[solved] stuck on bootloop after flashing los 17

steps i did:
installed twrp twrp-3.4.0-1-markw
flashed lineage-17.1-20200920-UNOFFICIAL-markw by shiabzzz
wiped data and cache, excluding internal storage
tried to flash gaps but failed due to error 20
flashed magisk
reboot.
now im stuck on bootloop. i know i should have deleted data before flashing the rom, not afterwards. when i press power+up it's not going to recovery.
how can i fix it?
are gaps mandatory for it to boot?
will my phone turn off when it runs out of battery, will i be able to go to recovery then?
update: i can access fastboot mode, but when connecting to pc and trying to boot to recovery it says "waiting for device".

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