Unbeknowest until just recently, it never crossed my mind about any reading limitations of large capacity hdds. Apparently regardless of OS or BIOS, currently anything larger then 137GB's requires an IDE Raid/SCSI card. Step in WD's 200gb hdd. Has anyone here been able to install and actually read all of wd's 200gb capacity(minus of course the few gigs you would normally lose under windows)? Here's a problem that I actually looked at on a friends pc, we installed a promise tx2 raid card(which came with the hdd), its drivers, wd's drivers without a hitch. There were no device manager errors or system errors of any sort. However XP can only access 137gigs of the hdd. We tried all kinds of different configurations and even talked to wd's tech support too no avail. We also visted WD's site and flashed the promise card and still nothing. If we ran the card directly off the mobo the volume information would indicate that there was approximately 50gigs of unallocated space, but when we checked the volume info when attached off the raid card there was no un-allocated space. If anyone could shed any light on this issue it would greatly be appreciated. Is it just a wd issue or are other hdd manufacturers selling 200gb hdd's just as flaky? Is this technology still too new for the home pc? I mean if they are aiming for the home pc market it shouldn't be this difficult. Afterall we live in a plugandplay world Thanks ahead P.S. We tried other Promise cards that WD sent us.