To be detected at all, or to be detected as ATA/100
well as you probably know.. the ATA/100 will not be active on the hdd in an old mobo.. however the drive itself should be detected.. there is a limit of how much data a motherboard can see on it's hard drives... but they should at least all get detected.. for example, when I had a P200 rig, I tried to put a WD 10.2 GB in it, and it detected and all was fine, i installed windows, etc.. no problems.. but 8.4 GB was the max it could see and essentially, use. so.. if you want full use of a large hdd in that old mobo i would suggest getting an IDE controller card so it can transfer at ATA/100, AND be allowed to use all available space on the drive itself. - from my experiences, that would be what i do.