Windows XP Setup issues

[ExNusquam 11]

Ok, I have a huge problem here. I am attempting to install windows XP 64 bit on a computer. I have the 1 tb HDD split into a 700 GB partition with the rest un-partitioned space. XP is (Obviously) being set up on the 700 GB partition. I plan on using the ~280 GB remaining to install Win 7 for a dual boot system. Once XP installs, the computer reboots and says set up will continue. I imagine it will boot off the HDD, with the CD remaining in the drive. A least that is how XP media center installs on my other computer. However, after the reboot, the BIOS forces the OS to load of the CD drive first regardless. Set up loads back at the default screen, with no indication that it has already been run. Ok, easy fix, load the boot menu and tell it to load off the hard drive. Oops, loading off the HDD gives me a fatal error with a message telling me to CTRL-ALT-DEL to restart. Could the unpartitioned space be causing this? If not, does anyone have any suggestions as to fix it?

[TechguyMaxC 221]

Change the boot order in the BIOS so that the HD is set to boot before the CD.

[ExNusquam 11]

If you read my post, I had already changed that.It turns out it was an issue with the way windows 7 was formatting the drive that was causing the issue.