Can't read CP/M disks on PC

Randy McLaughlin cctalk at randy482.com
Tue Mar 8 09:57:14 CST 2005


From: "David Cantrell" <david at cantrell.org.uk>
Sent: Tuesday, March 08, 2005 4:50 AM
> On Mon, Mar 07, 2005 at 08:56:35AM -0800, Vintage Computer Festival wrote:
>>
>> So now that I've got the 8" drive running well on the PC, I am trying to
>> read 8" CP/M disks.  22Disk is giving me sector not found errors
>> (cylinder 2, side 0, sector 1) and the DOS CP/M tools are giving me
>> "Unknown floppy disk format", even on disks that read fine on my NEC APC.
>>
>> I tried reading in a sector using debug but I also get read errors.
>
> What happens when you try to read cylinder 0 side 0 sector 1?  Same
> errors?  Try all the other possible sector numbers - CP/M disk formats
> often use crazy sector numbers.
>
> -- 
> David Cantrell | http://www.cantrell.org.uk/david
>
>  When one has bathed in Christ there is no need to bathe a second time
>      -- St. Jerome, on why washing is a vile pagan practice

Anadisk can tell you a lot but it is possible he is trying to read FM data 
on an MFM only controller.


Randy 




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