🚀 go-pugleaf

In <14952@cbmvax.commodore.com>, ken@cbmvax.commodore.com (Ken Farinsky - CATS) writes:
>In article <34582@cup.portal.com> Donald_B_Phillips@cup.portal.com writes:
>>Does anybody know what the maximum block number is for a hard disk?  I've got
>>a Maxtor 8760S drive (which I finally got to work with the A2090 controller)
>>and can only address about 1250 cylinders out of a possible 1632.  The drive
>>has 15 heads & 54 sectors per track, which is what I'm using in the mountlist.
>>
>>The drive is a SCSI device.  Am I possibly hitting some other limit for
>>sectors/track or cyliders?
>
>I believe that the 2090 is limited in the number of heads it can deal
>with (I think 7 or 8 max.)  What you should do is cut the number of heads
>to something like 5, increase the sectors per track to come up with
>the correct total.  SCSI only cares about the total number of sectors.
>You could tell it 1 head and it would be ok, only a sector number is
>passed to the drive for access.

I have run SCSI disks on the 2090(A) with 15 heads specified in the mountlist.
I believe the 8 head limitation is on the the ST506 interface only (and is a
real limit). It does, however, pay to try a few other configurations on a SCSI
drive.

-larry

--
It is not possible to both understand and appreciate Intel CPUs.
    -D.Wolfskill
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|   //   Larry Phillips                                                 |
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