Try changing the filesystem type in Apple's partitioning program or the
BSD one, reboot, and see if you can unmount it then.

"C.R. Carlson" wrote:
> 
> Bob, Henry, et al:
> Thanks for the advise. I have tried initializing with all extensions off,
> tried it with the HD erased, (i.e. no other system software except whats on
> the boot floppy), and other forms of voodoo. Nothing works.
> I do note that the HD came with a "third party" driver installed, (get info
> says FWB ID 0, 1.7.5) and I am wondering if I would actually need their
> software to get this thing to format. Hmmm. The patched Apple 7.5.3 won't
> do it.
> Oh well. Appreciate the attempts at help.
> Have a nice turkey day folks. I at least did get PPP working, now
> struggling with sendmail......
> Clarence