IBM XT clone controller card problems

I was futzing around with an old XT clone last night. I hadn't even turned it on in about two or three years, but it seemed to work ok. . .until I accidentally bumped the table it was sitting on. Then it wouldn't boot at all (hard drive crash?) I could still start it up from floppy, though. So I tried FORMAT C:, but that wouldn't work. Neither would FORMATting the drive after an FDISK. Low-level format time . . .I did the DEBUG G=C800:5 trick and got into the low-level format routine. Unfortunately I didn't know the full details of the drive (cylinders, interleave, etc), so I guessed a bit at some of the numbers. Well, the LL format finished, and the drive seemed to work well. ..until I rebooted the machine. Now the machine won't boot at all with the controller card in it. (If I remove the entire controller card, not just disconnect the HD, I can still boot from floppy) So, did I permanently zonk out the drive? The Controller Card too? Thanks in advance! ------------------------------------------------------------------------------- Charles P. Hobbs __ __ ____ ___ ___ ____ transit(a)primenet.com /__)/__) / / / / /_ /\ / /_ / / / \ / / / / /__ / \/ /___ / -------------------------------------------------------------------------------