Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ulowell!cbmvax!jesup
From: jesup@cbmvax.UUCP (Randell Jesup)
Newsgroups: comp.sys.amiga
Subject: Re: URGENT hard disk questions.
Message-ID: <5526@cbmvax.UUCP>
Date: 19 Dec 88 21:13:19 GMT
References: <3885@pt.cs.cmu.edu> <9800@gryphon.COM>
Reply-To: jesup@cbmvax.UUCP (Randell Jesup)
Organization: Commodore Technology, West Chester, PA
Lines: 24

In article <9800@gryphon.COM> jdow@gryphon.COM (J. Dow) writes:
>In article <3885@pt.cs.cmu.edu> mjw@f.gp.cs.cmu.edu (Michael Witbrock) writes:
>>Could some one tell me what the appropriate Blocks per track and Surfaces and 
>>Interleave numbers are for a ST277N SCSI drive.
...
>>what does it mean when it says, halfway through a format,
>>"format failed, can't open device."  (which is patently untrue, since it 
>>already has to format the other tracks on the partition), and why should this 
>>happen at different cylinders at different trys.)

	Are you sure it didn't say "can't open handler"?

>817 cylinders. THere are 26 sectors per track and 6 heads per 
>cylinder. But one sector per cylinder is reserved so it is 
>best to tell AmigaDOS that you have one surface and 155 blocks
>per track and 817 as highcyl for the last partition.

	I'd use Fred Fish's numbers if you have an A2090 or A2090A.  The
current driver for those can't handle more than, I think, 63 sectors per
track.  Fred's numbers let you use every sector of the drive.

-- 
You've heard of CATS? Well, I'm a member of DOGS: Developers Of Great Software.
Randell Jesup, Commodore Engineering {uunet|rutgers|allegra}!cbmvax!jesup