I'm having this HD prob, too. I get the "invalid boot disk" error, which I'm lead to believe means my drive is seen, but not understood. Does this mean my cable is good? Unfortunately, I don't have a spare to test.
I can't get it to autodetect. I've tried all manner of cyls/heads/sector entries on both D and C. Tried C, A, SCSI and C Only.
I removed the drive and it still boots DOS on the desktop unit and checked that the partition is active. Does the DOS version matter? I might be using an oldie, like v5.1
When I reinstalled the drive, I changed the orientation, to ensure it's not being squashed against anything.
I have the v1 BIOS. I notice above someone writes about being able to see the hardware discovery messages as the machine boots, but all I'm getting is the "nothing but net" graphic. Is there a way to duck past the graphic?
BTW, I have a v4b, with a Toshiba 6GB, 9.5mm drive (MK6015MAP). I have no jumper installed for master/slave.
I'm taking a class the requires Windows, so I need this puppy up and running. All I have right now are Linux and Macs.