Griffiths_DN@cc.curtin.edu.au (09/28/90)
G'Day, I've got a problem with trying to get Minix 1.3 running on an AT clone. The boot disk I have for Minix is a 5.25" DSDD whereas the A: drive on my AT is a 3.5" 1.44Mb drive. The B: drive is a 5.25" 360Kb. Can anyone tell me how I can get a AT boot created using the above drives and MS-DOS utilities? --------------------+-------------------------------------------------------- Don Griffiths | JANET munnari!cc.curtin.edu.au!Griffiths_DN@uk.ac.ukc Information Systems | UUCP uunet!munnari!cc.curtin.edu.au!Griffiths_DN Curtin University | Bitnet Griffiths_DN%cc.curtin.edu.au@cunyvm.bitnet GPO Box U1987 | PSImail psi%050529452300030::Griffiths_DN PERTH, 6000 | Internet Griffiths_DN@cc.curtin.edu.au Western Australia | ACSnet Griffiths_DN@cc.cut.oz.au --------------------+---------------------------------------------------------- Telex : AA-92983 CURTIN Fax : +61-9-351-2378 Telephone : +61-9-351-7691 -------------------------------------------------------------------------------
MRTSI@CUNYVM (Mimi Tausner) (09/29/90)
About a month ago I figured out how to make a 3.5 inch boot disk from an
original 5.25 disk under MINIX. I couldn't figure out how to do it using DOS
utilities - which is what you asked for. I don't know if this helps or not,
but this is what I did :
Starting with MINIX 1.3 -the AT version - this worked ...
(The computer I used has a 5 1/4" drive in 0, and a 3 1/2" drive in 1).
Use DOS to format 3 high-density 3 1/2" disks
(At this stage, I am only copying MINIX disks 1, 2, and 3.)
Boot MINIX 1.3 from the 5 1/4" disks.
Logon as super-user.
Copy /usr/bin/dd to /bin and unmount /dev/fd0.
Make copies of disk 1 and 2 either by using
dd if=/dev/fd0 of=/dev/fd1 # this results in 720 records in & out
or dd if=/dev/at0 of=/dev/at1 # this results in 2400 records in & out
Make copies of disk 3 by using
dd if=/dev/at0 of=/dev/at1 # this results in 2400 records in & out
Note that according to AST's message of 6 Sept <7469@start.cs.vu.n1> this
method will have to be changed for MINIX 1.5. To create a 3 1/2" version of
highly packed disks, you'll probably want to use /dev/PS0 and /dev/PS1.