[Coco] How to create an 80 track 2 sided disk with SDC

Theodore (Alex) Evans alxevans at concentric.net
Thu Dec 17 20:54:55 EST 2015

On 12/17/2015 01:54 PM, Bruce W. Calkins wrote:

Having played around with patching the ROMs in the past, my experience

> 1: The RS Disk file structure and allocation tables are not real
> friendly for modification to larger disks.

It works alright for up to 126 granules (64 usable tracks)

> 2: Unmodified RS Disk Basic plays havoc with disks set up with modified
> structures and allocation tables.

As long as you only read, there are no problems.  If you accidentally
try to write you will have problems.  Of course with the SDC you can
have the patches come up every time you start your CoCo and not really
have these issues.

Still, it isn't worth it to me, but I generally work under OS-9.

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