3.5" floppy for 386ix
Rick Richardson
rick at pcrat.uucp
Thu Nov 16 15:34:42 AEST 1989
In article <1989Nov15.150751.4003 at virtech.uucp> cpcahil at virtech.uucp (Conor P. Cahill) writes:
>In article <4436 at gaboon.UUCP>, asv at gaboon.UUCP (Stan Voket) writes:
>> I'd like to add a 3.5" floppy drive to my 386/ix system as fd1. Would
>> someone please mail me the mknod command lines to make both the 720 and
>> 1.44 meg devices please.
>This kind of info is well documented under fd(7) in the manual.
>PS. You should already have the devices in /dev/dsk and /dev/rdsk.
I went thru this myself a couple of months ago. fd(7) doesn't say
word one about what minor numbers are needed for the floppies, but
there is a table of minor numbers on page 104 of the 386/ix Maintenance
Procedures manual. Not all of the device nodes were present on
my system (was at 2.0.1 at the time). I couldn't find any better
info in the 2.0.2 release notes when they came.
I pieced the following table together from the info in the maintenance
manual and the floppy header file. I would love to have a complete
table, though. And also, somebody please tell me why the SA
scripts call the 3.5 inch floppy "f05qt" -- where did the "5"
come from? These names are totally bizarre, I made my own names
that I can remember: /dev/fd0, /dev/fh0 for DS/DD and DS/HD.
7,6,5,4 3 2,1 0
+-----------------------+-------+-----------+------+
| FORMAT | SIDES | PARTITION | UNIT |
+-----------------------+-------+-----------+------+
FORMAT
0 0 High Density, 15 sectors, 5.25"
16 1 Double Density, 9 sectors, 5.25"
32 2 Double Density, 8 sectors, 5.25"
48 3 Single Density, 8 sectors, 5.25"
4 ***unknown***
80 5 High Density, 18 sectors, 3.5" (1.44MB)
96 6 Quad Density, 3.5" (720KB)
7-15 ***unknown***
SIDES
0 0 Two
8 1 One
PARTITION
0 0 Whole
2 1 First Cylinder only
4 2 Except First Cylinder
UNIT
0 0 Drive 0
1 1 Drive 1
-Rick
--
Rick Richardson | Looking for FAX software for UNIX/386 ?????? mention
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