I have a laptop that gets very hot and when it overheats it shuts down abruptly. By Sod's law this happened while I was updating to 11.04 (during the install phase, somewhere in the lib* section, so probably the worst time).
When I try to boot into Ubuntu now it cannot find the root filesystem, (I get the option to wait, skip mounting or enter a root terminal). My laptop's keyboard has also decided not to work (this has happened before and it eventually came back, although I do think it's time for a new laptop) - luckily USB continues to work. I am able to boot into my Windows partition so I can assume the hard drive isn't smashed.
My question is how screwed is my Ubuntu install? I have quite a lot of data on the Ubuntu partition - is this lost or will I be able to access it via a live CD? How would I go about manually locating the filesystem in the root terminal? I don't mind reinstalling, but getting the data first is very important (yes, backup is quickly going to be sorted out, damned hindsight).