A friend of mine had a problem trying to boot from his hard drive. I thought it might be a CMOS issue so I played around with his CMOS settings...it still didn't think his C drive was bootable...so I tried the disk in one of my linux systems. No difference. However, now I can't boot up from my linux box..during the boot process I'm told that I have an "invalid system disk" and it can't boot. Am I stupid or what? Any ideas? Steve