On Tue, Jul 01, 1997 at 05:03:02PM -0700, Kevin McQuiggin wrote:
> I have a Sun 3/50 with an external SCSI drive and tape. The tape is a
> QIC-60, the disk is hooked to an Emulex MD21 controller. It's an ESDI
> drive. The machine is running NetBSD/sun3 1.1A (GENERIC).
> 
> I have a second ESDI disk that I would like to hook to the MD21. 
> 
> Once I have the second drive physically connected, how do I format it? In
> the VAX world there is a low level formatting/verifying routine in ROM on
> the controller. I presume this is necessary as well in the SCSI world? 

I beleive you still have to use SunOS to do this, since the
MD21 (If I'm remembering this correctly) must see the EDSI disk
formatted first to mark out bad blocks, since EDSI drives don't have
this capability, yet SCSI drives do.  I know when I did the EDSI thing
(aiee..I was trying to supress those memories!), I used the SunOS
recommended method of formatting the disk, doing the surface test, etc.
Took AGES on my 3/110, but it was necessary to get the EDSI drives
'seen' before I could partition them.

It may be worth a try to see if you can just 'edlabel' the disk
without any formatting though.

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