1 Mar
2023
1 Mar
'23
11:54 p.m.
On 3/1/23 15:36, Fred Cisin via cctalk wrote:
Chuck once told us that DRIVPARM can be coerced into
working on some of
the systemes that it won't work on, by inserting some Ctrl-A characters;
DRIVPARM ^A^A^A /D:2 /F:2
BTW, FORMAT, DRIVER.SYS uses the tracks and sectors that you specify
FORMAT E: /T:80 /N:9
ONLY to select WHICH ONE from the internal list. It WILL NOT let you
change a format, such as
FORMAT E: /T:77 /N:8 unless it already has that format somewhere in
the internal list.
https://retrocmp.de/fdd/8inch/drivparm.htm
https://retrocmp.de/ms-kb/Q35766%20Supported%20Values%20for%20FORMAT%20:N%2…
/F:3 was once 8" SD
/F:4 was once 8: DD
Any machines, other than SCP that still support those?
In PC DOS 3.2 and 3.3
When using PC DOS 3.2 or 3.3, DRIVPARM is undocumented but it can be
made to work using this trick. In CONFIG.SYS, type:
Normal DOS 4.0+ DRIVPARM set-up switches.
\/
DRIVPARM ^A^A^A {switches}
/\
Type Ctrl-A, not Shift-6 A. In MS-DOS's Edit, type Ctrl-P
then Ctrl-A (you will see a smiley face on the screen).
From https://www.doomi.ch/undocumented-dos-commands/
--Chuck