In article <fmoore->,
Fred Moore <> wrote:
> In article
> <c87ec91f-5ceb-4ea8-b412->,
> Doug_M <> wrote:
>
> > On Nov 26, 1:38*pm, Doug_M <doug.mccom...@gmail.com> wrote:
> > >
> > > I've got an 8500 running 7.6.1. *Everytime I start up I get the
> > > warning "This computer may not have been shut down properly the last
> > > time it was used". *Well of course it was shut down properly. *I get
> > > the error whether I shut down from the menu or by pressing the power
> > > key on the keyboard. *I thought the problem might be a bad pram
> > > battery so I replaced that but it hasn't helped. *I know I can turn
> > > the error off in the General Controls control panel, but to me that is
> > > just hiding the problem. *Any ideas?
> >
> > Thanks for all the suggestions. I ended up using TechTool Pro 2 which
> > found problems with the volume structure. I didn't have any blank
> > cd's lying around, only dvd's but I did have a scsi zip 250 drive
> > lying around. I bought it new (and cheap) a few years back and tucked
> > it away. So I put System 7.6.1 and TechTool Pro on that and was able
> > to boot from it. Problem solved.
>
> Well, I'd say fixed, but not necessarily solved unless you know what
> caused the problem in the first place and have taken steps to prevent
> it's happening again.
>
> Since this is a very old machine, how old is the boot hard drive? If
> over 5 years, it is quite possible read/write errors are causing the
> problem with the disk structure, and hence the message. Make LOTS of
> backups. Personally, I wouldn't trust a Zip drive for anything more than
> an extra temporary backup -- certainly better than nothing, but not
> considered durable.
Some PowerPC computers would cut the power too soon on shutdown; not
giving some types of hard disks enough time to flush their cache. My
memory is fuzzy but I think it went something like this - If the disk
spins for ~4 seconds after the screen blanks, it's OK. If the disk
stops and the screen blanks at the same time, it is prone to the bug.
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