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From: lsr@apple.UUCP (Larry Rosenstein)
Newsgroups: comp.sys.mac
Subject: Re: Is is safe to veto disk re-insertion prompts?
Message-ID: <363@apple.UUCP>
Date: Mon, 8-Dec-86 13:36:09 EST
Article-I.D.: apple.363
Posted: Mon Dec  8 13:36:09 1986
Date-Received: Mon, 8-Dec-86 21:47:40 EST
References: <1716@batcomputer.tn.cornell.edu>
Reply-To: lsr@apple.UUCP (Larry Rosenstein)
Organization: Advanced Development Group, Apple Computer
Lines: 31

In article <1716@batcomputer.tn.cornell.edu> eacj@batcomputer.UUCP (Julian Vrieslander) writes:
>I just discovered that the disk insertion prompt can be made to disappear
>without inserting the disk, if you hit command-period.  This is handy, but
>I wonder if there are situations where this is dangerous.  My best guess is
>that the worst that can happen is that you might miss a FlushVol call to the
>disk that was requested, which is no big deal if the disk was on the way to
>the re-cycle box.
>

If you Command-. a disk switch box, the I/O call that was running will
return an error -53: volume off line.  (You can also get a -53 error if you
do an asynchronous I/O call to an off-line volume.)  

In most cases, this will result in an alert from the application.
(Sometimes you will get a bizarre message, however.)  If you cancel a
FlushVol, then the disk will not be updated.  If you do this when the
application is trying to load a resource (some CODE, for example) then the
application is likely to crash.

I wouldn't get into the habit of using this feature, but if the disk doesn't
exist anymore, then you have nothing to lose by trying it.

-- 
Larry Rosenstein

Object Specialist
Apple Computer

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