Re: Adaptec AHA2940

Ricky Beam (
Fri, 3 Jan 1997 14:52:03 -0500 (EST)

Letting the chips far where they may, I quote Joachim Paulini:
>>b..b..b..b..But... SCSI is supposed to be interchangeable, a fundamental
>>goal of the interface design. This is alarming news. Is NCR or Adaptec
>>at fault?

[Blame Adaptec for their screwy DOSism drive geometry shit.]

>NCR (now Symbios Logic) controllers and Adaptec controllers format disks
>in different ways. However, NCR controllers are able to work with
>Adaptec-formatted disks, but Adaptecs are not able to work with NCR-
>formatted. You may reformat, but you lose your data.

Now that just isn't true... I have two 2Gig drives originally formated (low
leveled) on an NCR 53c815 controller. That system now has an Adaptec 2940U
controller running those drives. No reformating has been done. No
repartitioning has been done. Linux will read the partition table and work
with that geometry spec ignoring the lies from the controller.

Just what does the 2940's return for a scsi getgeometry call?

FYI: fdisk does have a fit with the drives like this, so I don't run fdisk!


"This business is like the tobacco business. I wouldn't smoke for love or money
but by god I'll sell the shit outa it..." -- Virgil Wall