hardin@dino.cad.mcc.com (John Hardin) (06/20/91)
In upgrading my vanilla Mac II (no PMMU, 5M) to System 7, I created 3
SilverLining partitions on my hard drive: a minimal System 6 partition
(from which I restored my backed-up System 6 partition), a restored
System 6 partition, and a System 7 partition.
Things have been running quite smoothly (i.e., I can boot my system
from *any* of the partitions). However, just recently, I can no
longer boot my system from the restored System 6 partition. When
attempting to boot from this partition, the "happy" mac face appears,
the screen blinks (kind of flickers with a checker-board looking
pattern), then (I guess) decides it can't boot from that partition
(i.e., the restored System 6), and moves on to the next partition. I
can still boot from the remaining two partitions. And after booting,
the restored System 6 partition is completely accessible (i.e., it
mounts just fine - so I think the partition itself is okay). I've
restored my Finder and System file from backup, but I still can't boot
from that partition.
Has anyone seen these sorts of problems and know what can be done
(short of *completely* restoring my partition from backup) to fix it?
Thanks in advance,
-jwh
--
John Hardin MCC CAD Program
AT&T: 512/338-3535 3500 W. Balcones Center Drive
ARPA: hardin@mcc.com Austin, TX 78759-6509
UUCP: {harvard,gatech,uunet}!cs.utexas.edu!hardin%mcc.comlanger@gibbs.uchicago.edu (Steve Langer) (06/21/91)
In article <HARDIN.91Jun20094810@dino.cad.mcc.com> hardin@dino.cad.mcc.com (John Hardin) writes: >In upgrading my vanilla Mac II (no PMMU, 5M) to System 7, I created 3 >SilverLining partitions on my hard drive: a minimal System 6 partition >(from which I restored my backed-up System 6 partition), a restored >System 6 partition, and a System 7 partition. > >Things have been running quite smoothly (i.e., I can boot my system >from *any* of the partitions). However, just recently, I can no >longer boot my system from the restored System 6 partition. When >attempting to boot from this partition, the "happy" mac face appears, >the screen blinks (kind of flickers with a checker-board looking >pattern), then (I guess) decides it can't boot from that partition >(i.e., the restored System 6), and moves on to the next partition. I >can still boot from the remaining two partitions. And after booting, >the restored System 6 partition is completely accessible (i.e., it >mounts just fine - so I think the partition itself is okay). I've >restored my Finder and System file from backup, but I still can't boot >from that partition. > >Has anyone seen these sorts of problems and know what can be done >(short of *completely* restoring my partition from backup) to fix it? > >Thanks in advance, >-jwh >-- >John Hardin MCC CAD Program >AT&T: 512/338-3535 3500 W. Balcones Center Drive >ARPA: hardin@mcc.com Austin, TX 78759-6509 >UUCP: {harvard,gatech,uunet}!cs.utexas.edu!hardin%mcc.com I had a similar problem -- when I first installed System 7 it was ok, but then I tried to switch back to 6.0.5 (by renaming the 6.0.5 partition in Silverlining so that it would mount first). THAT worked, but I couldn't undo it. Renaming the partitions again and rebooting caused the checkerboard pattern you mention to appear, followed by a System 6 boot. I deleted System 7 and reinstalled it on its partition, and now I'm happily running 7 again. I haven't tried switching back to 6.0.5 by renaming partitions. I tried using SystemSwitcher, but the machine always boots with System 7. I've got a IIcx, 8 Meg, no internal drive, LaCie external with Silverlining 5.31. The System 6 system has the Desktop Manager installed. Thanks in advance from me too, Steve (langer@control.uchicago.edu)
hardin@dino.cad.mcc.com (John Hardin) (06/24/91)
Steve Langer writes: +> +> In article <HARDIN.91Jun20094810@dino.cad.mcc.com> hardin@dino.cad.mcc.com (John Hardin) writes: +> >In upgrading my vanilla Mac II (no PMMU, 5M) to System 7, I created 3 +> >SilverLining partitions on my hard drive: a minimal System 6 partition +> >(from which I restored my backed-up System 6 partition), a restored +> >System 6 partition, and a System 7 partition. +> > +> >Things have been running quite smoothly (i.e., I can boot my system +> >from *any* of the partitions). However, just recently, I can no +> >longer boot my system from the restored System 6 partition. When +> >attempting to boot from this partition, the "happy" mac face appears, +> >the screen blinks (kind of flickers with a checker-board looking +> >pattern), then (I guess) decides it can't boot from that partition +> >(i.e., the restored System 6), and moves on to the next partition. I +> >can still boot from the remaining two partitions. And after booting, +> >the restored System 6 partition is completely accessible (i.e., it +> >mounts just fine - so I think the partition itself is okay). I've +> >restored my Finder and System file from backup, but I still can't boot +> >from that partition. +> > +> >Has anyone seen these sorts of problems and know what can be done +> >(short of *completely* restoring my partition from backup) to fix it? +> > +> >Thanks in advance, +> >-jwh +> >-- +> >John Hardin MCC CAD Program +> >AT&T: 512/338-3535 3500 W. Balcones Center Drive +> >ARPA: hardin@mcc.com Austin, TX 78759-6509 +> >UUCP: {harvard,gatech,uunet}!cs.utexas.edu!hardin%mcc.com +> +> +> I had a similar problem -- when I first installed System 7 it was ok, but +> then I tried to switch back to 6.0.5 (by renaming the 6.0.5 partition in +> Silverlining so that it would mount first). THAT worked, but I couldn't +> undo it. Renaming the partitions again and rebooting caused the +> checkerboard pattern you mention to appear, followed by a System 6 boot. +> I deleted System 7 and reinstalled it on its partition, and now I'm +> happily running 7 again. I haven't tried switching back to 6.0.5 by +> renaming partitions. I tried using SystemSwitcher, but the machine +> always boots with System 7. +> I've got a IIcx, 8 Meg, no internal drive, LaCie external with Silverlining +> 5.31. The System 6 system has the Desktop Manager installed. +> +> Thanks in advance from me too, +> Steve (langer@control.uchicago.edu) I've solved my problem! But I don't find the solution very comforting! I ultimately had to restore the entirety of the System folder from backup. But even after restoring, I still had the same "unable to boot, checkerboard flicker" problem. By (divine? :-) "happenstance", I happened onto the "Set Startup..." dialog and noticed that the (restored - *twice* now!) System 6 partition (that wouldn't boot) startup was set to Finder - not MultiFinder. This is (was) weird, because the startup was set to MultiFinder when it was backed up. Well, to make an already way too long story only a little bit longer, I set the startup to MultiFinder and restarted and, low and behold, THE PARTITION NOW BOOTS! (Obviously there's something going on here that I don't understand. Can some enlightened soul possibly clear my confusion?) Anyway, all seems well. I can now consistently boot Systems 6 and 7. (Steve, I hope this info helps you.) -jwh -- John Hardin MCC CAD Program AT&T: 512/338-3535 3500 W. Balcones Center Drive ARPA: hardin@mcc.com Austin, TX 78759-6509 UUCP: {harvard,gatech,uunet}!cs.utexas.edu!hardin%mcc.com