Unknown Partition - Vista>XP

So I'm switching back to WindowsXP Pro from Vista x32. My drive is sectioned off into two partitions of roughly equal size.

I backed up everything I wanted to keep onto the secondary partition, and booted to my WindowsXP Pro install CD. It shows my primary partition as NTFS, which is fine, but my secondary partition, which I have all my backed up software, is [UNKNOWN].

I've seen this before, unfortunately (second time I've switched back to Vista, different computers.) and realized once I got into WindowsXP, I couldn't access the secondary partition -- WindowsXP ignores it.

Any ideas how I can get this shit to be recognized in WindowsXP? I don't feel like re-downloading all that stuff, plus I have no DVD Burner, and I have about 30GB backed up onto that partition.

Thanks in advance.

>>3
Vista can't read HPFS either. Windows Me was the last Windows to sort of have HPFS support.
Copying the files to another partition of drive should be fine, assuming it's formatted as NTFS or one of the FATs.