Upgrading third-party drivers

We recommend that you remove any third-party drivers from your system before upgrading to SCO OpenServer Release 5.0.6, then restore the drivers after you have rebooted successfully following the upgrade. If a third-party driver from your previous SCO system is not compatible with SCO OpenServer Release 5.0.6, the kernel (/stand/unix) may not link at the end of installation.

If the kernel does not link at the end of installation, try to boot from the kernel called /stand/unix.safe (which does not contain the third-party drivers), into single-user mode.

If the driver for the root hard disk controller is one of the third-party drivers missing, the unix.safe kernel will not boot. If this happens, boot the system using a boot-time loadable driver (BTLD) for this SCO OpenServer system. Then, remove the old driver from the link kit, and install the BTLD using installpkg(ADM).