Appendix B How
to
Configure
Your
System
251
I
Drivparm
Purpose:
This
command
allows you
to
define parameters for block devices
when
you start MS-DOS, overriding
the
original MS-DOS device
driver
settings.
Syntax:
drivparm=/d:dd
[/c)
[/f/ll
[!h:hh)
[In)
[/s:ss)
[/t:ttt)
Comments:
Setting drivparm overrides any previous block device
driver
definitions.
The
dd
parameter
for the Id: switch specifies a logical drive
number
between
0 and 255. This means
that
drive
number
0 =
A,
I =
B,
2 =
C,
etc.
The Ic switch specifies that change-line
(doorlock)
support
is
required.
The
II
option
on
the
If: switch specifies
the
form factor index,
where:
o =
320/360K
bytes
I 1.2M bytes
2
=
nOK
bytes
3
= 8" single density
4
= 8"
double
density
5
= Hard disk
6
= Tape drive
7
=
Other
The
default values for
the
following parameters
depend
upon
the
form factor specified
with
the
If: switch.
If
you
do
not specify
the
If: switch, drivparm uses a default
of
nOK
bytes.
The
hh
option
on
the !h: switch specifies
the
maximum head
number. Its value can range from 1
to
99.
The
In
switch specifies a nonremovable block device.
The
ss
option
for
the
Is: switch specifies
the
number
of
sectors
per
track. Its value
can
range from I
to
99.
The
ttl
option
for
the
It:
switch specifies
the
number
of
tracks
per
side
on
the
block device. Its value can range from I
to
999.
Drivparm
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