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From: mp1w#@andrew.cmu.edu (Marc Russell Pawliger)
Newsgroups: comp.sys.mac
Subject: Master Directory Block Trashing
Message-ID: <542237269.1056.mp1w.knox.ibm032@andrew.cmu.edu>
Date: Sun, 8-Mar-87 16:26:00 EST
Article-I.D.: andrew.542237269.1056.mp1w.knox.ibm032
Posted: Sun Mar  8 16:26:00 1987
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I have an 800K HFS disk on which the Master Directory block is trashed.
(at least according to FEdit 3.7+)  I scanned the entire disk and got
no media errors, so I can only assume that its contents are trashed,
and that the files are still intact.

Is there any way to (manually or otherwise) reconstruct the blocks,
since the finder won't even recognize the disk as more than a frisbee
without them.  Does the commercially available FEdit+ hnadle HFS
recontructions?  Any other hints appreciated.

Also, the old (pre HFS) FEdit documentation had a beautiful section
dealing with MFS disk format, which tracks were what, where the
directory lived, etc.  Is there anything similar for HFS?  I checked
for Tech Notes dealing with the subject and didn't find any.  This
might help me to manually redo the disk.

				Marc Pawliger
				mp1w@andrew.cmu.edu
				mp1w@cmuccvma.bitnet