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From: ken@cbmvax.commodore.com (Ken Farinsky - CATS)
Newsgroups: comp.sys.amiga.tech
Subject: Re: AmigaDos 1.3 disk limits
Message-ID: <14952@cbmvax.commodore.com>
Date: 8 Oct 90 14:00:07 GMT
References: <34582@cup.portal.com>
Reply-To: ken@cbmvax.commodore.com (Ken Farinsky - CATS)
Organization: Commodore, West Chester, PA
Lines: 20

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.
-- 
--
Ken Farinsky - CATS - (215) 431-9421 - Commodore Business Machines
uucp: ken@cbmvax.commodore.com   or  ...{uunet,rutgers}!cbmvax!ken
bix:  kfarinsky