20 Apr
2001
20 Apr
'01
6:46 p.m.
From: Don Maslin <donm(a)cts.com>
I have been asked to see if I can transfer the
contents of some 8"
disks to PC compatible disks. A CP/M disk has offered no challenge,
but I am stopped dead on a disk whose label indicates that it was
for use on a DEC Minc 11.
Are you sure they are RX01 (single density) and not RX02 (double density
but m2fm)?
The latter is not readable on anything nonDEC compatable.
Using AnaDisk, I am able to determine that there are
26x128 byte
sectors per track, but with a data error message for each sector.
Considering some of DEC's strange format characteristics I am not
too surprised that AnaDisk has a problem with it. But PUTR's
problems do surprise me. Another disk gives exactly the same result.
It is certainly possible that the disk is simply bad, but could there
possibly be some other operating system format that is also 26x128
but does not respond to PUTR and the options that I have tried.
the RX02 has SD header and DD data, NONE of the IC controllers can
read that.
Thanks for any hints that you can offer.
find a PDP-11 (MIC-11 is a PDP11 with lab interfaces).
Allison