Extracting CDOS and CP/M) files

dave06a at dunfield.com dave06a at dunfield.com
Thu Oct 11 13:51:55 CDT 2007


> -----------Original Message:
> Date: Thu, 11 Oct 2007 08:39:00 -0700
> From: "Chuck Guzis" <cclist at sydex.com>
> Subject: Re: Extracting CDOS and CP/M) files
> 
> Looking at the first diskette image, it ppears that it's been 
> corrupted somehow (the second one is fine).  Take a look at cylinder 
> 1, side 0, sector 1.  Near the beginning of the directory we see the 
> entries for two files, FRAME1.MAP, FRAME1.PIX (2 extents)  
> <snip>
> 
> -----------Reply:
> 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.

I believe Chuck made his disks from the TeleDisk images, also I
get the cross-link error on the original as well.

I was told that these three disks have already visited several other
people who attempted to recover the files from them...

Dave

-- 
dave06a (at)    Dave Dunfield
dunfield (dot)  Firmware development services & tools: www.dunfield.com
com             Collector of vintage computing equipment:
                http://www.classiccmp.org/dunfield/index.html



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