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Elementary OS freezes on loading screen after update
Hi. After updating my elementary OS Freya 64 bit using update manager it freezed on loading screen. The only thing I could see was elementary OS logo and blinking animation and nothing else happened. My hard drive seemed to be idle. When I pressed ESC or ctrl + alt + F1 on loading screen I could see this message repeating a few times:
scanning for btfrs filesystems end request: i/o error, dev sr0, sector 0 and it freezed. When I tried to enter recovery mode there were some messages and this one at the end:
Btfrs info (device sda8): disk space caching is enabled.
sudo btrfs check --repair --init-csum-tree /dev/sda8 and now when I try to boot to elementary OS my keyboard LEDs are blinking and when I go to recovery mode I see this message:
kernel offset 0x0 from ffffffff81000000 relocation range end kernel panic - not syncing: attempted to kill init! exit code=0x000000100.
Is there any way to fix my system? What caused those issues?