Path: ns-mx!uunet!spool.mu.edu!mips!apple!dlyons
From: dlyons@Apple.COM (David A Lyons)
Newsgroups: comp.sys.apple2
Subject: Re: Hard drive wierdness
Message-ID: <55857@apple.Apple.COM>
Date: 6 Aug 91 15:56:44 GMT
References: <4401@ux.acs.umn.edu>
Organization: Apple Computer Inc., Cupertino, CA
Lines: 29

In article <4401@ux.acs.umn.edu> helwig@ux.acs.umn.edu (Ron Helwig) writes:
>I saw a post a ways back about someone who had a hard drive partition
>appear hatched and was not allowed access. Apparently it was caused
>by the shutdown program from the MostCool demo. Well, I tried that
>program before reading the article and now have the same problem. The
>article hinted about how to fix it, but I don't have prosel and don't
>know what EXACTLY to do. I do have Copy II plus 8.2, but that is about
>it for utilitiy programs.

Edit block 2, which is the first block of the root directory.

The first two bytes are the link to the previous block.  There is none,
so zero is right.  The second two are the link to the next block in the
directory, which should be $0003, so change the byte at offset 2 to be a
3.  First 4 bytes should now be: 00 00 03 00 (the 03 00 is $0003...the
low-order byte always comes first).

One more fix is needed.  At offset $22 (still in block 2) is the "access"
word for the main directory.  You'll find that it's zero, but you want
it to be $E3.

Reference:  ProDOS 8 Technical Reference Manual, pp. 148-149.
-- 
David A. Lyons, Apple Computer, Inc.      |   DAL Systems
Apple II System Software Engineer         |   P.O. Box 875
America Online: Dave Lyons                |   Cupertino, CA 95015-0875
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My opinions are my own, not Apple's.