Disk imaging with IMD - question

william degnan billdegnan at gmail.com
Wed Aug 9 12:07:55 CDT 2017


NOTE - I was able to make a bootable 8" DOS 6.22 disk even though it
slammed the last three tracks, on my imaging computer.  The computer
thought it was writing to a 1.2M 5 1/4 disk.

BUT you're saying a quad density SS disk.  I never tried that and if you
say it does not work then I can't dispute that without trying it myself.

BIll

On Wed, Aug 9, 2017 at 12:52 PM, Richard Cini via cctalk <
cctalk at classiccmp.org> wrote:

> It's funny -- I didn't see the original reply from Bill to this message.
>
> I am aware of  the track differences and I thought Dos would format it but
> just slam the head for the last three tracks. No such luck. It actually
> complains about the disk from the beginning.
>
> The Qume 242 is a DSDD drive in case that was asked in the original
> thread, and should work in this situation.
>
> I tried to format a disk with both IMD and NFORMAT (utility I downloaded)
> and neither products a disk format that DOS likes. I'm sure it's my
> selection of parameters more so than the program itself.
>
>
>
> Rich
>
> Sent from Verizon/AOL Mobile Mail
>
> On Wednesday, August 9, 2017, Chuck Guzis via cctalk <
> cctalk at classiccmp.org> wrote:
>
> On 08/09/2017 01:41 AM, william degnan wrote:
>
> > How about booting into dos and just formatting a disk that way?
>
> Go back and read what I wrote, Bill. If single-sided media is being
> used, DOS formatting will fail as there is no single-sided high-density
> format available.
>
> Of course, if double-sided media is used, DOS formatting as a 1.2MB DOS
> disk should work--up to track 76. Note that 8" drives are 77
> track/cylinder, not 80, as the 5.25" drives are.
>
> IMD can handle the issues quite readily, as its formatting facility will
> do whatever you tell it to do.
>
> --Chuck
>
>
>


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