I was running Kubuntu v14 (I think) just fine on a home built desktop. I applied the most recent updates and all of the sudden, when I try to boot the machine, it is going into a black screen with a bunch of dump codes ending in the following:
kernel panic-not syncing: VFS: unable to mount root fs on unknown block(0,0)
Someone on a different Linux forum suggested that the problem might be "a kernel upgrade gone wrong" and suggested I boot from a backup kernel.
Can anyone explain how I can go about doing this?