I know this link is related to BT4, but I followed the first part to install my Ati Radeon HD 5850 on my BT5 Gnome Persistent USB drive. The ati driver installation goes without problems and appears to check out ok. However when I reboot I get to the command prompt before typing 'startx' and then all I get is a black screen. Wondered if anyone can point me in the right direction as to where I might be going wrong