OK, so I used Windows XP for years before I was able to get my hands on the Windows 7 RC which I bought a new HDD for, and then followed the process to dual-boot. About a month ago Windows XP started acting funny, and I thought the disk might be dying. So I started using Windows 7 all the time.
Today I start the computer, and it can't find the disk which Windows XP was on anymore. I guess it's dead. So I remove the Windows XP HD and my computer can't start; "insert bootable disk" or something similar.
So how can I remove the primary (dead) Windows XP disk and boot straight to Windows 7?