Path: utzoo!attcan!cmtl01!matrox!uvm-gen!uunet!lll-winken!lll-lcc!ames!oliveb!amiga!kodiak
From: kodiak@amiga.UUCP (Robert R. Burns)
Newsgroups: comp.sys.amiga.tech
Subject: Re: st277n drive and sectors per track & cyl
Keywords: mount,st277n
Message-ID: <3277@amiga.UUCP>
Date: 26 Jan 89 00:19:47 GMT
References: <mount> <3836@cs.Buffalo.EDU> <11175@gryphon.COM>
Reply-To: kodiak@tooter.UUCP (Robert Burns)
Organization: Commodore-Amiga Inc, Los Gatos CA
Lines: 26

In article  jdow@gryphon.COM (J. Dow) writes:
)In article  mpalumbo@sunybcs.UUCP (Michael Palumbo) writes:
)>i just bought a st277n drive and noticed that it has 26 sectors
)>per track but only has 155 sectors per cylinder.  How does this 
)>work with the mountlist where you only indicate number of sectors
)>per track?  Will this drive work or am i missing something?

)The proper trick (or at least the easiest) is to tell the mountlist that the
)drive has only one head and 155 blockspertrack. That is the way I use the
)drive here and it works peachy with both StarDrive and HardFrame and with
)both OldFS and FFS.

That's what I do too ... but please don't use this trick with a 2090 or 2090A,
because the format command for these is currently limited to 64 sectors per
track, so you won't be able to format the drive w/ (1, 155) (heads, bpt).
You have to come up with a heads*bpt*(hicyl-lowcyl+1) that best represents
your partitioning configuration and respects the 64 bpt limit.  The drive
should work fine, but you won't be able to access all the sectors with one
partition.

- Kodiak
-- 
Bob Burns, amiga!kodiak                   _
| /_  _|. _ |      Commodore __          |_) _ |_  _ )'
|<(_)(_)|(_\|<      /\ |  ||| _` /\      |_)(_\| )(_\ |
| \ Software    ___/..\|\/|||__|/..\___           Faith