Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!samsung!emory!mephisto!bloom-beacon!eru!luth!sunic!mcsun!ukc!icdoc!qmw-cs!liam
From: liam@cs.qmw.ac.uk (William Roberts)
Newsgroups: comp.unix.aux
Subject: SCSI devices under A/UX
Message-ID: <1775@sequent.cs.qmw.ac.uk>
Date: 12 Mar 90 11:48:19 GMT
References: <4506@helios.TAMU.EDU> <12315@thorin.cs.unc.edu> <1759@sequent.cs.qmw.ac.uk> <9023@shlump.nac.dec.com> <235@inpnms.UUCP>
Reply-To: liam@cs.qmw.ac.uk (William Roberts)
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In article <235@inpnms.UUCP> logan@inpnms.UUCP (Jim Logan) writes:
>Maybe I can get the ball rolling in this newsgroup with a simple
>question.  Can anyone tell me how painful it is to use disk drives
>and QIC tape drives from other vendors under A/UX?

>I don't know if the A/UX SCSI driver will support any old big
>SCSI disk I plug in.  Does the format program know how to format
>a disk this large?  ...   Can I boot from this
>external 300MB drive?  Can I leave the Finder on my 40MB internal
>drive so I can use it sometimes?

Disk drives are OK, but they will need to be partitioned in a
way that conforms to the Apple partitioning approach, and then
some extra A/UX stuff done with the A/UX dp utility. Your best
bet is to stick with a disk that is advertised as being
suitable for use with the Macintosh (but then these are pretty
cheap anyway, compared with Sun peripherals and the like).

Any Mac-compatible disk that doesn't require special things in the
System Folder should work, and so do some of the ones that do. The
SCSI handling under A/UX is more or less generic SCSI commands
and the A/UX system understands big disks just like other UNIX
systems do.

You *must* keep the Finder somewhere since you can only boot
A/UX by running a Mac application called "sash" = StandAlone Shell.
You can have A/UX and the little MacOS partition you'll require
on any of the disks, and you can mix and match to your heart's
content. A/UX understands the notion of dividing disks into
serveral distinct partitions (as does MacOS these days).

>Does the SCSI tape driver know how to talk to
>anything besides the Apple 40MB tape drive?

Tape drives I know nothing about...


-- 

William Roberts                 ARPA: liam@cs.qmw.ac.uk
Queen Mary & Westfield College  UUCP: liam@qmw-cs.UUCP
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