11 Oct
2008
11 Oct
'08
7:46 p.m.
--- On Sat, 10/11/08, Roy J. Tellason <rtellason at verizon.net> wrote:
I'd think that
You shouldn't have any problems reading disks with unusual numbers of sectors.
I've been reading/writing/formatting all sorts of wacky formats in Linux with no
problems. Even 77 track/256 byte sector/DD/5 1/4" disks. Single density is still a
challenge for the stock floppy controller though.
All you have to do is figure out the formatting of the disk, by supplying fdrawcmd with
commands to read a track, sector, etc and test the limits until you hit errors, so you can
figure out the track/sector layout. Then, set the parameters of the drive with setfdprm,
and dd the disk to a file. By setting the parameters of the drive with setfdprm, you can
then use fdformat to format blank disks in that format, and then you can freely dd your
image back to a disk.
-Ian
> >
David, do you know whether ImageDisk will
image them correctly?
>
> It appears ImageDisk doesn't work with 8
sector ones.
>
> The 3.51 utilities disks were copied OK with
ImageDisk, except for the
VDI disk,
which apparently is 8 sector.
Hrm... any ideas why it won't image 8 sector ? smaller # of sectors would be easier....
I remember using utilities under DOS to make funky
formats...
but I was always shooting for more capacity in
the day
(extra
sector, extra tracks).... not less :-)
I remember some of those, too, and in fact had some in
the files section of
my bbs. But I also remember stuff that would deal with
"foreign" formats,