"Alistair J Ross" <mailat@alirossdotco.uk> wrote in message
news:pan.2004.07.02.11.21.49.257301@alirossdotco.uk...
> Hmm,
>
>     Well, I have two Disk ][ interface cards, one from the Europlus and
one
>     from an //e. I don't know if either work, as I don't really know how
to
>     test them. I don't have any reason to doubt them working though.
>
>     Next, I have a number of disks from different sources, the chances of
them
>     all being faulty is very unlikely.
>
>     Finally, taking a blank DSDD diskette and using a DMP image as
previously
>     discussed will produce a copy of DOS in memory. I was able to use INIT
to
>     attempt to save DOS to disk, but unfortunately, the error given was
DISK
>     I/O error, it simply hits the heads off the top of the disk as with
>     recalibration.
>
>     So, I doubt that both of my controller cards are faulty, looking at
the
>     drives insides it appears ok, and I would doubt that the machine is 13
>     sector, I am using a ][+, not the original ][, so aren't those 16
sector
>     machines?
>
> Regards,
>
> Alistair Ross

I think Don has you on the right track with the disk density. I thought I
would point out that 13 or 16 sector has nothing to do with the machines. It
depends on the PROM on the controller card. And those will work in all
machines.

     13 sector                     16 sector
P5 341-0009-xx            P5A 341-0027-xx
P6 341-0010-xx            P6A 341-0028-xx