Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!orstcs!jacobs.CS.ORST.EDU!throoph
From: throoph@jacobs.CS.ORST.EDU (Henry Throop)
Newsgroups: comp.sys.apple
Subject: Re: System 5.0/interleave
Message-ID: <12355@orstcs.CS.ORST.EDU>
Date: 2 Sep 89 05:42:25 GMT
References: <12313@orstcs.CS.ORST.EDU> <825@xroads.UUCP>
Sender: usenet@orstcs.CS.ORST.EDU
Reply-To: throoph@jacobs.CS.ORST.EDU.UUCP (Henry Throop)
Organization: Oregon State University - CS - Corvallis Oregon
Lines: 24

In article <825@xroads.UUCP> cc@xroads.UUCP (Dan McGuirk) writes:
<<It seems that if you boot up System 5.0 to the Finder off a floppy with
<<a certain interleave (say, 2:1, volume name 'System.disk'), eject it by
<<dragging into the trash can (I can't stand all these cute icons), and then
<<put in another disk *with a different interleave* than the boot volume,
<<but the same volume name, Finder thinks that the original disk is still
<<on the desktop, although it's not.  [...]
<
<Are you sure that it doesn't do that with a disk named SYSTEM.DISK of ANY
<interleave?  I thought that was to make sure that GS/OS didn't try to read
<the tools from the wrong disk.  If you had a disk that was named SYSTEM.DISK
<but didn't have the tools, or had different tool versions, I think it would
<probably screw things up.  I think the Finder is just trying to take
<precautions against this happening.

I haven't tried it, but I bet you're right on this.  Finder probably reads
in a track or so for it to keep track of different disks, and with a different
interleave, the track image would be different.  It might also be the system
that keeps track, so you don't put in the wrong disk when loading tools, etc.
In any event, the error message Fider gives ('The volume "System.disk" is 
already on the desktop...') is misleading.
 
Henry