Windows XP Pro launch problem

[BoomDriver]

I have a home built system with a 500 GB hard drive divided up into two
roughly equal partitions. I installed Windows XP Pro on the first partition
when I bought the hard drive over a year ago, and recently installed Windows
Vista Ultimate 64-bit on the second partition.

I can not get Windows XP Pro to boot now, no matter which option I select
(nomally, safe mode, etc.). Whenever I try, my computer restarts after a few
seconds. There are no error messages. However, Windows Vista boots normally.

When I look at my hard drive in Windows Explorer, it shows what Vista has
appropriated the "C:" letter for itself, though I installed it on the second
partition.

How can I get Windows XP Pro to boot without completely wiping my hard drive
and starting from scratch?

 

[JS]

I have a home built system with a 500 GB hard drive divided up into two
roughly equal partitions. I installed Windows XP Pro on the first
partition
when I bought the hard drive over a year ago, and recently installed
Windows
Vista Ultimate 64-bit on the second partition.

I can not get Windows XP Pro to boot now, no matter which option I select
(nomally, safe mode, etc.). Whenever I try, my computer restarts after a
few
seconds. There are no error messages. However, Windows Vista boots
normally.

When I look at my hard drive in Windows Explorer, it shows what Vista has
appropriated the "C:" letter for itself, though I installed it on the
second
partition.

How can I get Windows XP Pro to boot without completely wiping my hard
drive
and starting from scratch?

Dual Boot Installation with Windows 7 and XP
http://www.sevenforums.com/tutorials/8057-dual-boot-installation-windows-7-xp.html

EasyBCD:
http://neosmart.net/dl.php?id=1

The above should work for Vista and XP also.