I faced a problem with the space available on the disk and for dev loop0 it gave me 0 available space, so I deleted any old unused kernel as I googled that. My current used kernel was 4.4.0-36 so I deleted the only other version of kernel which was 4.4.0-31 as I searched.
I also used the following commands to solve that problem :
sudo apt-get update sudo apt-get upgrade sudo apt-get clean
Although that the password is correct, I became stuck in the login screen when I rebooted my Ubuntu 16 later on. The screen was moved to a black screen with the following line for a moment and back again to the login screen:
blk_update_request: I/O error , dev loop0 , sector 22675464
I tried all the possible solutions available on the Internet, but unfortunately, when got the Terminal and typed
sudo it gave that it does found in the
So I could not be able to solve this problem and I do not want to install Ubuntu again because I have an important work and files.
Could you give a full answer for this problem - and for the other problem which is the space problem - in a correct way?