|It sounds like you've got it connected right. Post back the model of the drive. It's possible it's a 360 K drive. Both the 1.2 meg and 360 K drives looked alike. That would account for the bios message.|
I'd have to look around to see if I still have any info on those. I think the D1 is a drive select. Generally for those drives there were four, going from D0 to D3 or D1 to D4. When using the twisted cable you'd want the jumper in the second position--either D1 or D2 depending on if they start at D0 or D1. I think LG is a chassis ground and I'm not sure about DC. All that's off the top of my head and I'd have to check further to make sure.
But post back the model first and we'll go from there.