Modern PC's and old ATA drives?

I'm trying to recover data from an old Conner CFS420A (420MB) Hard Drive for someone. http://www.seagate.com/support/disc/specs/ata/cfs420a.html I've tried hooking it up to my two IDE-to-USB cables, I can't see it on my Mac when connected to either. I can see it on my WinXP system when connected to the older cable (which oddly enough doesn't like most HD's I've plugged into it). However, I don't see any sign of partitions. When I plugged it directly into the motherboard, the BIOS complained and seemed to indicate 0MB. Do modern PC's have a problem with really old HD's? I'm told that either Win95 or Win98 was on the drive. Will a HD report info about itself, even if it is dead? Thanks, Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | | MONK::HEALYZH (DECnet) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |