Ubuntu 10.04 LTS failed to restart after upgrade

[massimo sandal]

2010/4/30 Mizanur Khondoker <mizanur.khondoker at googlemail.com>:
> Dear list,
>
> I upgraded Ubuntu 9.10 Desktop to the latest LTS release. The upgrade
> process went smoothly, failed to restart.
> I run Ubuntu as a virtual machine using virtualbox on a Windows XP
> host. After restarting, all I see is a black screen with a
> non-responsive white cursor on the top left hand corner of the screen.
>
> I did not backup anything before the upgrade -now I wonder I lost
> everything on my virtual disk!.
>

Probably your data are safe. To check this, reboot with a livecd
(Ubuntu or else), and see if you can find your partition and your
data. If yes, *backup your data ;)* so you don't worry later.

I unfortunately don't know what the problem can be. Could you tell us
what is your hardware in as much detail as possible? Have you tried
booting in recovery mode?

cheers,
m.