I'll try this in here too, since H/A seems to be low traffic right now.
Okay, in the long fucking line of problems my computer has developed since last night, after two fresh installations of Windows, my SATA hard drives have decided to stop working. The first drive just dropped out completely, while the second drive could be seen, but not accessed. I went and redefined the first array, and now have regular access. However, the second drive cannot be seen. I go into the Disk Management utility, and I can see the drive is there, but Windows XP says it's unallocated. I've doubled, and triple checked, the it appears to be defined right and current drivers are installed, so I'm pretty much at a loss. So, now I'm deferring to your expertise.
I should add, there are files on this drive, and if at all possible, I'd like to regain access without losing that data. I'm not adverse to a third fresh install of XP, if the problem is software related. Though I'd prefer that as a last option.