Knowledge Base

How do I change or recover a lost root password in SCO OpenServer 5.0.7?


  1. If you are able to login as another user run /etc/hwconfig -hc and look for the root controller hardware adapter driver of the disk for the root disk.

    For example:disk – – – type=S ha=0 id=1 lun=0 bus=0 ht=ciss unit=1
    Sdsk – – – cyls=8717 hds=255 secs=32 unit=1 fts=stdb 
    In this case the ht=ciss shows it is the ciss driver. 
  2. Download from or from the 5.0.7 installation CD in the /images/boot directory get the btld for the root controller and create a btld onto a floppy or CDRom.

    For floppy:

    format /dev/rfd0135ds18dd if=btld.img of=/dev/fd0
  3. Insert the 5.0.7 installation CD and reboot the server. (You may have to power off and on, since you cannot shutdown). 
  4. At the boot: prompt load the btld (If needed)For example:

    Boot: defbootstr link=”ciss”
  5. Continue with the Installation until you get to the Keyboard setup. 
  6. At the Keyboard setup of the Installation press F8.

    Arrow down to the “Shell Escape” and press Enter.
    You will be at an <Installation> prompt 
  7. Check to see if /dev/root exisits.l /dev/root
    If it does verify is has the major & minor of 1, 42. If not then rm /dev/rootIf you deleted /dev/root or it does not exist create it:mknod /dev/root b 1 42
  8. Mount the root filesystem.

    mount /dev/root /mnt

    You might have to clean it up. If the mount is unsuccessful run

    fsck –ofull /dev/root

    then retry mount /dev/root /mnt
  9. Now change the root system to the hard drive./mnt/opt/K/SCO/Unix/5.0.7Hw/etc/chroot /mnt /opt/K/SCO/Unix/5.0.7Hw/bin/shYou will then have a promt with the #
  10. If step 9 is successful, change the root password by entering:passwd root
  11. Unmount the root filesystem and reboot

    umount /mnt


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