Hi All,
I recently acquired a GA-586ATX Motherboard (this) and I'm having issues getting it to detect any HDD. Let me clarify... It sees the drive but will not auto detect it's size and hangs on the detect. For one thing the IDE sockets are not pin keyed (They do have the socket key) so I had to drill the blocked pin hole on the cables to make them fit. It will detect my CD drive using both cables and both IDE ports, but it will not recognize any of my IDE hard drives. It boots up fine and I can even boot into DOS with an install floppy as long as I tell it there's no HDD. I've made sure that all drives are pinned as Master and/or Single and then tried Cable Select on them all. I have tried 6 different drives, they are 20GB and 40GB Seagate and Western Digital drives. The drives are good and all work fine on my primary DOS machine. I'd think the IDE Controller was bad but the CD-Rom Detects and works fine with a boot disk. It has the most recent BIOS image on the ROM. Is there something I'm unaware of regarding the unkeyed sockets and HDD's.

Also, just to give as much info as possible, I'm using a more recent power supply that doesn't include the -5v rail. I think this only affects ISA cards and then only certain ones that I don't have. I doubt it's affecting the IDE detection but the motherboard does give me a health warning about it.