When prompted about the upgrade to 12.04 I clicked yes. All went well until during the cleanup mode an error appeared in the terminal that said something like "too many errors were encountered." A few minutes after that I lost all video. After a few more minutes I did a hard shutdown of the computer and restarted.
Now, it boots to UI very quickly. The buttons are there but they are all white. Background is white. No icons. No mouse or keyboard. (cursor appears on screen but no response.).
None of the previous kernels will boot either. I can start the grub loader...choose one and I briefly see the Ubuntu progress meter (which I don't with upgraded install) then black screen with mouse (which does respond) but then nothing.
I am OK with reinstalling but there are some virtual-box images I DESPERATELY want to get off of there first.
I boot to bootable (12.04) usb. I also attach another external hd. I boot to usb without installing it shows my 500 GB disk that the upgraded install is on. But whenever I click on it it says "The folder contents could not be displayed. You do not have the permissions necessary to view the contents of "500gbDrive".
How can I mount that disk to save my data off onto the external drive before I reinstall?
What is the best way to recover from this. If I reinstall will my old file system (with the VBox HD) be preserved? (I am backing it up no matter what though.)
I am a pretty new to Linux. Help!