Master File Table Corruption After SP2 Installation

[NHBI]

My MoBo (ASUS A7V original) doesn't natively support >137GB HDs without SP1 or higher and the updated ATA100 Promise drivers. I had a working 160GB HD. I did a fresh reinstall of XP pro, upgraded to SP2, and also reinstalled the updated the ATA100 Promise drivers. So I was re-organizing some files and while writing to the 160 GB HD (non-boot disk) it suddenly became corrupt and unreadable. The XP disk management tool says it's "healthy," Partition Magic 8 sees the drive but has ? marks for it's size. ON reboot, the DSK check prog says "Corrupt Master File Table." All my other HDs, which are less than 137GB, have no problems.

Sucks. Maybe I should have stuck with SP1. How do I go about reactivating the partition, is possible? And what file retrieval progs are good to use? Sould I uninstall SP2 and go back to SP1?

[cuteperv]

try to run chkdsk on the drive that has this problem. if it is possible, the chkdsk will simply fix all the errors on that drive. B cautious that some of the stuff on the corrupted drive will be lost.