I just had the same problem on a quantum I was sure was fried. Then for
S&Gs I tried to format it with an old CMS SCSI Tool. It worked great! 
All the other formatters I tried gave me the "drive needs a low level
format", or "invalid partition map"  I was surprised these utlities
wouldn't just write a new partition map.  Any way on the quantum web
site they tell you only the factory can do a low level format, so I
don't know if the CMS SCSI Tool really did one or not.  WWW.quantum.com
also has descriptions of those cryptic jumper lables e.g.: (SS = Self
Seek; EP = Enable parity; etc)

Good luck,

gerald


> Dan,
> 
> Well, now we are getting somewhere.  APS PowerTools 3.8 tells me that the 
> drive needs a low level format.  When I try to format it, APS gives me 
> the error message "Command 'AsyncFormat' failed. Error:-7932 - Unknown 
> System or OS error."  Now if I only knew what that meant in English! :-)
> 
> Cheers,
> 
> Sean.