Rebuilding the Device Configuration Database
About this document
Procedure to rebuild the device configuration database
This document describes how to rebuild the device configuration database.
This document applies to AIX Versions 4.x.
WARNING: When you rebuild the ODM customized devices database, you
will lose any special configuration you have for customized devices. For
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.
The system should now reboot with a default device database. You will need to
redefine the system console upon the initial boot. Afterwards, any
customized devices will need to be redefined and any non-rootvg volume groups
will need to be re-imported.
- 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.
- Run the following command to mount the /dev/hd2(/usr) file
mount /dev/hd2 /usr
- This step is optional. With the following commands, copy the current
system configuration to a backup directory:
mount /dev/hd4 /mnt
cp /mnt/etc/objrepos/Cu* /mnt/etc/objrepos/backup
- Determine what disk or disks the boot image is on. Enter:
lslv -l hd5
- Save the RAM file-system-based device configuration database to
the boot disk or disks. For example:
savebase -d /dev/hdisk0
- Turn the key to the Normal position, if applicable, and run the
[ Doc Ref: 91132248313424 Publish Date: Feb. 13, 2001 4FAX Ref: 2155 ]