Hardware configuration overview

Rebuilding the kernel

Sometimes when you add new hardware or change the kernel configuration, you need to rebuild your kernel. For example, when you add a new device driver, you may be prompted to rebuild the kernel.

To rebuild the kernel by hand, run:

/etc/conf/cf.d/link_unix

On SCO OpenServer Release 6.0.0 systems, when you run link_unix(ADM), the idbuild(ADM) command is invoked. The /etc/conf/bin/idbuild command records the fact that a kernel relink is necessary. A relink is then automatically performed the next time the system is booted. This behavior allows you to minimize the number of relinks that are run when adding multiple kernel components or packages.

Alternatively, you can use idbuild -B (or link_unix -y) to rebuild the kernel immediately.

NOTE: All kernel configuration changes must be made before running link_unix -y. Be sure you only run link_unix -y once and reboot the system immediately afterwards.

See the idbuild(ADM) and link_unix(ADM) manual pages for more information.

The new kernel is placed in /stand/unix and linked to /unix. The previous kernel is saved in /stand/unix.old. If you have a problem rebooting the new kernel, you can still reboot using the old kernel. To do so, press <Enter> when the Booting SCO OpenServer ... message is displayed. Then, at the boot prompt, enter:

boot unix.old