Probably a stupid question;
I have one computer that I dual boot with Windows XP and PCLinuxOS and KDE Desktop. Works like a charm.
Tried installing the Linux OS on a second computer by it's self, and LIVE CD runs fine, but once installed and rebooted, I get Invalid System Disk. Loaded Windows on 2nd computer. Windows boots fine. Loaded Linux to dual boot and once again get invalid system disk. I'm sure I am missing something, but do not know what it is.