That is very helpful to know. Somebody is selling this on ebay, but I'd much rather go IDE if I can. The Ebay drive is a 4GB drive; are you saying that it won't work either? Do you know of any IDE cards for this machine? I haven't been able to find one.
Thanks!
Unless your 2091 has version 7 ROMS, that 4GB drive won't work either. I had a couple of 2GB drives salvaged from a Sun box that wouldn't work either. I couldn't even get them to work partitioned as 1GB drives. The 500MB drive from a mac external drive worked great.
IDE cards have been made... I don't see any still available either, at least on a quick search.