From: wilhelm@mcst.ae.ge.com (Roland Wilhelm)
Newsgroups: comp.sys.mac.apps
Subject: Re: HELP - BUNDLE BIT LOST!!
Date: 10 Nov 92 00:55:32 GMT
Followup-To: comp.sys.mac.apps,comp.sys.mac.system,comp.sys.mac.misc
Organization: GE Aircraft Engines, Cincinnati, OH

In article <BxF2qo.5uA@cen.ex.ac.uk>, RJSulliv@cen.ex.ac.uk (R.J.Sullivan)
wrote:
> 
> I would be very grateful for any advice concerning a problem that I am
> experiencing with my Macintosh system. I have a Quadra 700 with an
> external Bernoulli Dual 90 Pro. The internal hard disk was removed by
> my Apple dealer for security reasons.I have found that the Quadra will
> only recognise SCSI devices if I remove the internal SCSI terminator
> block. In other words with only one device in the SCSI chain
> terminated (the Bernoulli) things appear to work whereas with two ends
> terminated they don't. The system even works if I daisy-chain more
> than one external SCSI device. Is this Okay?
> 
> I am worried that the frequent coruptions that I am experiencing are
> caused by this unusual SCSI setup. On several occasions when I have
> attempted to run applications on floppy disk or copy them from the
> floppy disk I lock up the system. Norton Disk Doctor attributes this
> problem to the relevant files having lost their bundle bit! However,
> although Disk Doctor thinks it has fixed the problem, the file is
> still corrupted. I also seem to get this problem if I use Bernoulli
> disks formatted in a friend's Bernoulli Dual (not the pro). What is
> the bundle bit and why is it being lost??
> 
> Many thanks in advance
> 
> Rob Sullivan.
> 
> P.s we are both using System 7.01 and he has a IIsi.

Apple SCSI is black magic and I have yet to find someone out there who can
say anything definitive other than, "It's black magic!"  Oh, there's also,
"If it's working, don't breath on it."  One incantation I've heard is that
"things" work better if all the device ID's are in sequential order,
starting with ID zero.  Another thing one needs to track is the device
driver -- call up the manufacturer of the drive and ask what the latest
driver for your hardware & OS is.  If you have it, try reinstalling it --
both the device driver and the SCSI software on the Mac can get corrupted
(for the Mac, reinstall the system -- and trashing the system files first
is often a good thing to do).  One other incantation, make sure you
formatted your cartridges with your machine.  If they came preformatted the
interleave, etc may be incorrect for your machine.

If it's any consolation, I help manage just about every Mac configuration,
and they all regularly lose their bundle bits.  Sometimes dramatically --
run Nortons one day and it's fine; the next day, bunches of bundles are
missing.  I've also seen files that I haven't for months and years change
dates on me.  This drives me nutso!  Anyone know any technical explanation
for this tom-foolery?  (I've got *plenty of cynical ones already, thanks 
:-)

When you finally get this fixed, let us know what good black magic (????)
worked!!!  Happy hacking!

       Roland Wilhelm

______________________________________________________________________________
wilhelm@mcst.ae.ge.com           | "If you can't defend both sides of an
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wilhelm@michelotti.ae.ge.com     | well, chances are you don't understand
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Newsgroups: comp.sys.mac.apps