Rebuilding the Device Configuration Database

• Custom configuration for x.25, ttys, printers, and so on will be lost. You should save this information before rebuilding the device database.
• Any user-created volume groups will have to be re-added with the command:

            importvg -y [vgname] [hdisk#] 
  

  vgname is the volume group name and # is the number of any of the hard disks containing the volume group to be added.
• Your system name and possibly other configuration parameters for TCP/IP will be lost. You should save TCP/IP configuration before rebuilding the device database.

Perform the following procedures to replace the current device database with a default minimum configuration database. This new database will be in effect on the next system reboot.

1. Boot from NON_AUTOINSTALL media of the same version as the system and access the rootvg volume group without mounting the file systems. See the document "Booting in Service Mode" if there are any questions about booting your particular machine into Service mode.

2. Run the following command to mount the /dev/hd2(/usr) file system.

             mount /dev/hd2 /usr
   

3. This step is optional. With the following commands, copy the current system configuration to a backup directory:

             mount /dev/hd4 /mnt 
             mkdir /mnt/etc/objrepos/backup 
             cp /mnt/etc/objrepos/Cu* /mnt/etc/objrepos/backup
             umount /mnt
   

4. Determine what disk or disks the boot image is on. Enter:

             lslv -l hd5 
   

5. Save the RAM file-system-based device configuration database to the boot disk or disks. For example:

             savebase -d /dev/hdisk0
   

6. Turn the key to the Normal position, if applicable, and run the following command.

             reboot
   

[ Doc Ref: 91132248313424     Publish Date: Feb. 13, 2001     4FAX Ref: 2155 ]