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From: bskendig@phoenix.Princeton.EDU (Brian Kendig)
Newsgroups: comp.sys.mac
Subject: Re: SafeEject and 6.0.4
Message-ID: <11089@phoenix.Princeton.EDU>
Date: 26 Oct 89 14:44:37 GMT
References: <16371@dartvax.Dartmouth.EDU>
Reply-To: bskendig@phoenix.Princeton.EDU (Brian Kendig)
Organization: Systems Engineering, NASA Space Station Freedom Project
Lines: 45

In article <16371@dartvax.Dartmouth.EDU> danno@eleazar.dartmouth.edu (Secret Squirrel) writes:
>In article <11081@phoenix.Princeton.EDU> bskendig@phoenix.Princeton.EDU (Brian Kendig) writes:
>>
>>In summary: You still should use SafeEject with Systm 6.0.4 unless (a)
>>you don't want to, or (b) you always use FDHD disks and never 400k or 800k
>>ones.
>
>Flame? No. Just a clarification. If the FDHD fixes the problem in ROM,
>then (b) should read "You always use FDHD *drives* and never 800K
>drives." In other words, if you've got an SE/30 with an external 800K
>drive, you might want it still around. But an 800K *disk* in an FDHD
>should work fine.

oOps!  You're right.  A faux pas on my part.

Actually, tho', I'm not too sure.  There are four possible combinations of
disks and drives:

  FDHD drive with a FDHD disk (yes, an oxymoron) inside: It takes care of
    the heads automatically.  No problem there.

  FDHD drive with an 800k or 400k disk: Does anyone know if the FDHD board
    takes care of this situation?  It seems silly for the drive to check what
    kind of disk it's reading and decide from that whether or not to execute
    the safeguard...

  800k or 400k drive with a FDHD disk: Get real.

  800k or 400k drive with an 800k or 400k disk: You need SafeEject.

Any Apple dudes care to comment on the situation of an 800k disk in a
FDHD drive?

>An anecdote: someone called the help line here yesterday, saying how
>when she ejected the disk, the shutter stayed behind. So, anyone who
>doesn't believe it happens, IT HAPPENS!

I've gotten mail to the same effect from several people.  I've decided to
install SafeEject - just to be safe.  Thanks for the warning!

-- 
| Brian S. Kendig       |  I feel more like I   | bskendig                   |
| Computer Engineering  |  did when I got here  | @phoenix.Princeton.EDU     |
| Princeton University  |       than I do now.  | @PUCC.BITNET               |
| Systems Engineering, NASA Space Station Freedom / General Electric WP3     |