Path: utzoo!attcan!uunet!decwrl!ucbvax!pro-grouch.cts.com!rond
From: rond@pro-grouch.cts.com (Ron Dippold)
Newsgroups: comp.sys.apple2
Subject: Re: Prodos Error in Shrinkit.3.0.2
Message-ID: <2949.apple.net2@pro-grouch>
Date: 7 Jul 90 05:54:08 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 30

In-Reply-To: message from DHH102@psuvm.psu.edu

> I got a Prodos error number $51 while shrinking some files with shrinkit.
> This is the first time I've ever gotten this error, and I've gotten it
> several times today. Right now I'm in the process of backing up my
> hard drive. Do you think bad blocks on my hard drive might be causing this?
 
Hoo boy, you do have problems.  $51 means that it compared the count of
supposedly active files against the actual numbers of files in the directory
and they didn't agree.  Your directory structure is screwed.  ProDOS is very
picky about this, and will keep bugging you about it.  Bad blocks are usually
what do it, a lot of times through the famous delete error (what version of
proDOS 8 are you using?)
 
Your options:
  * first find out what directory has the error
then you have a choice
  * Best choice would be to copy everything from the bad directory and below
    to another place and then delete the bad directory and everything below,
    if it lets you.  You MAY have to copy the whole disk structure....  In
    that case, delete the whole disk and recopy everything.  This will take
    a long time, but as long as you need to lock out bad blocks...
  * Use Bag of Tricks 2.1 or something else that will "fix" the directory
    structure
  * Use a sector editor and change the number of active files to agree with
    the actual number.  This is of dubious safety...

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