Extracting CDOS and CP/M) files - test-drb@ccmp.vtda.org

11 Oct 2007

------------Original Message:
Date: Thu, 11 Oct 2007 11:40:11 -0700
From: "Chuck Guzis" <cclist at sydex.com>
Subject: Re: Extracting CDOS and CP/M) files

On 11 Oct 2007 at 13:51, M H Stein wrote:

...
  That's what I see: the first and third image have
cross-linked files
 but the second one looks OK; the question is whether the disks
 themselves have a problem or whether Dave's IMD program got
 confused. The first image seems to start on sector 2 and wrap 
 around; however, the third does start on sector1 but has errors 
 nevertheless. 
(Disclaimer: I haven't looked at the third image yet)

But it's not TeleDisk or ImageDisk that's messed up.  Note that in 
the first disk, the cross-linking/double-allocation entries are 
contained in the same physical sector.  

I'll grab a gander at the third disk later today when I have a 
chance.

Cheers,
Chuck

----------------Reply:

Yes, as usual I pressed Send before completely reading your message;
obviously the problem is on the disks themselves. I'm kicking myself
because I had looked at the directory entries before I started but didn't
notice the duplicate pointers (see, your eyes aren't nearly as bad as mine).

And it didn't occur to me that neither CDOS nor Cromix would complain
until I finally ran STAT; I just assumed the the disks must be good and the
problem lay in the transfer. Live & learn - never assume anything.

mike