Re: Cider Press weirdness with strange VTOC

[Andy McFadden <fadden@fadden.com>]

Jayson Smith <nospamratguyspambegone@nospamplease.bellsouth.ihatespam.net> wrote:
> I was just playing around today with making up my own VTOC for a DOS 3.3
> disk which would only support one catalog sector, on Track 17, Sector 15.  I
> therefore freed up the remaining unused catalog sectors.
[...]
>                         For some reason, Cider Press will not open a disk
> like I made, with only T17,S15 as a catalog sector, T17,S0 as VTOC and the
> rest of T17 free.  It complains about not being able to determine the
> filesystem type.

CiderPress needs to determine both the disk format and the sector
ordering.  One of the strategies is to walk through the catalog track
and see if the sectors appear in the proper order.  If they don't, the
ordering is probably wrong.  If there aren't enough catalog sectors to
make a determination, it gives up.

If you enable the "allow override of disk format" feature in the
disk image preferences, and manually specify the format, it should work
with a valid VTOC and one catalog sector.  Otherwise you need a valid
VTOC and three catalog sectors.

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