27 Jan
2014
27 Jan
'14
8:18 a.m.
On Jan 27, 2014, at 10:20 AM, Steven Hirsch <snhirsch at gmail.com> wrote:
I know almost nothing about the OSI 4P, but this does remind me of what I saw when trying
to image disks for the Epson QX-10 -- the Epson/Rising Star operating system TPM-II
formats disks with 16 256-byte sectors on tracks 0-1 (so it can boot) and then 10 512-byte
sectors on tracks 2 upwards. So, something similar might be happening on the 4P, if there
is a native disk reading format that the first track accessed needs to conform to, until
disk routines get loaded to access the rest.
-Paul
On Tue, 28 Jan 2014, Philip Lord wrote:
I was just
wondering if anyone knows what would cause track 0 to read bad and inconsistently, where
other tracks seem to read good and consistent?
Is it possible that Track 0 is at a different density? If that's the case, then
DISKREAD may be solely intended to read non-system tracks.