A while ago I started getting messages on my laptop saying that my /boot partition on Ubuntu was running low on disk space, so I followed a tutorial online to remove old packages. It was a while ago and I can't remember what I typed in, but it seemed to work. The next time I booted my computer up though it showed this error
"Kernal panic - not syncing: VFS: Unable to mount root fs on unknown block(0,0)"
It comes up with this error regardless of what boot option I choose. Ubuntu is the only OS on the computer and takes up the whole drive. Both the full disk and home folder were encrypted with separate passcodes on installation though.
~/.bash_history(the file .bash_history in default user directory) which has a list of my commands (mine include dates & time but default is without) .. thus avoiding any guess. As you can't boot; I'd boot a 'live' media (such as Ubuntu install media) thenmountyour drive and then explore your fs (filesystem) & scan your command history. (here's a link on mounting an encrypted partition https://askubuntu.com/questions/63594/mount-encrypted-volumes-from-command-line) – guiverc Nov 18 '17 at 06:44