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From: steve@violet.berkeley.edu (Steve Goldfield)
Newsgroups: comp.sys.mac.hardware,comp.sys.mac.misc
Subject: Re: Question on Removable HD
Message-ID: <1991Jan2.232147.4576@agate.berkeley.edu>
Date: 2 Jan 91 23:21:47 GMT
References: <1990Dec31.181853.28607@bronze.ucs.indiana.edu> <1991Jan2.215035.17901@uokmax.ecn.uoknor.edu>
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In article <1991Jan2.215035.17901@uokmax.ecn.uoknor.edu> rob@uokmax.ecn.uoknor.edu (Robert K Shull) writes:
#>In article <1990Dec31.181853.28607@bronze.ucs.indiana.edu> daemon@copper.ucs.indiana.edu (Mr Background) writes:
#>>        The thing is that I need to turn on the removable before I
#>>turn on the Mac. If not, the Mac won't recognize the removable. Also,
#>
#>I would suggest the Mount'Em fkey for this. It will mount all unmounted
#>SCSI partitions. Available on CIS, or send me mail and I'll mail you a
#>copy.
#>
#>>once both the removable and the Mac are turned on, I cannot turn off
#>>the removable and leave only the Mac on. If I do so, the Mac is freezed
#>>until you turn on the removable again or you restart the Mac. The
#>
#>This depends on the drive. My Syquest is from Alliance Peripheral Systems,
#>and doesn't show this problem.
#>
#>>-Peter Liu
#>
#>Robert Shull
#>-- 
#>Robert K. Shull
#>rob@uokmax.ecn.uoknor.edu				chinet!uokmax!rob

The problem, as I understand it, is that the Mac does
not like to have an SCSI device plugged in but not
powered on. I don't think it depends on the type of device.
My Mac won't boot in that situation either. However,
you shouldn't have to put a removable cartridge in
the drive to boot your Mac. You should only have to
have the power switch for the drive turned on.

Now whether or not your removable drive will then be visible
at that point is probably a function of the software
that comes with your drive. I know that DPI provides
an init to look for and hook up its drive.

In my case, I found that if I power up and load the
cartridge first, my system will load from the removable
instead of from my internal drive (because the removable
is then up and running while the internal drive is still
coming up to speed and because I have a system installed
on my removable which I prefer not to remove).

Steve Goldfield