Disk conversion 5.25 -> 3.5

[Karl-P. Huestegge]

swie at cs.umn.edu (S. T. Tan) writes:
>I have SCO Xenix 386 with 5.25 inch diskettes.
>But my laptop has a 3.5 inch 1.44 M disk drive.
>How can I copy the OS to 3.5 inch diskettes ?

You must have access to a working xenix system. 

First make a bootable 3.5" floppy with the mkdev fd utility.
You can also do it by hand if you look at the commands in the
/usr/lib/mkdev/fd - script. (select boot & root)
Mount the floppy and the N1 5.25 floppy, too.
Copy all files/directories/devices with cpio from the 5.25 to the 3.5 fd.
   For example you might copy the devices from the mounted 5.25 fd
   to the mounted 3.5 fd in /mnt3.5 with the command:
   cd /mnt/dev; ls | cpio -pdlm /mnt3.5/dev

All other floppies can simply be copied with dd.
    dd if=/dev/rfd0 ibs=1200 of=/dev/rfd1 obs=1440  /* fd0=5.25,fd1=3.5 */

If you are interested in details, look at the man pages for 
mkfs, dd, cpio and at the fd script.

Hope, this helps.

-- 
Karl-Peter Huestegge                       karl at robot.in-berlin.de
Berlin Friedenau                           ..unido!fub!geminix!robot!karl