Article View: comp.sys.amiga.tech
Article #8368Re: Getting a Mac Hyperdrive to work with a A2090
From: Chuck McManis
Date: Thu, 31 Mar 1988 06:56
Date: Thu, 31 Mar 1988 06:56
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In article <759@elxsi.UUCP> matt@elxsi.UUCP (Matt Shaver) writes:
->I am using an ST251N drive internal to the A2000 ...
->
->As far as I can tell the drive physically has:
-> 4 heads
-> 26 sectors per track
-> 818 cylinders
Actually the Seagate is saving one sector per cylinder for bad block sparing
on that cylinder. The most effective entry in this case is
1 heads
103 sectors/track
818 cylinders
Which exactly uses your entire drive.
The same logic needs to be applied to the MiniScribe 8425 drive which has
17 sectors/track but on one cylinder is saves one for a bad block. Thus
you tell it it has 1 head with 67 sectors per track. It's all mumbo jumbo
to SCSI because the SCSI stuff is talking 'Logical' blocks anyway. It
doesn't know what a cylinder or head or track is, thats all internal.
--Chuck McManis
uucp: {anywhere}!sun!cmcmanis BIX: cmcmanis ARPAnet: cmcmanis@sun.com
These opinions are my own and no one elses, but you knew that didn't you.
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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!think!ames!oliveb!sun!pepper!cmcmanis From: cmcmanis%pepper@Sun.COM (Chuck McManis) Newsgroups: comp.sys.amiga.tech,comp.sys.amiga Subject: Re: Getting a Mac Hyperdrive to work with a A2090 Message-ID: <47681@sun.uucp> Date: 31 Mar 88 06:56:51 GMT References: <2955@gryphon.CTS.COM> <8633@g.ms.uky.edu> <3006@gryphon.CTS.COM> <759@elxsi.UUCP> Sender: news@sun.uucp Reply-To: cmcmanis@sun.UUCP (Chuck McManis) Organization: Sun Microsystems, Mountain View Lines: 25