Why is Debian 10 not loading?

Question

linux

here is such a picture was before the reboot,

and now it gives out

what to do, tell me?

Answer 1

The disk is dry. Understand why it happened

Answer 2

"... Here is the cherished beast - the scribe
Who catches - well done ..." (C) The story of Bath, attributed to A.N. Tolstoy
Here you caught him, but nifiga not well done :) There were a lot of I / O errors, then the bucket started to roll off tasks that were hanging in the I / O scheduler, and after rebooting the disk was simply lost. Ask Zettabyte - maybe he can help.