☛ Modify the /usr/lib/boot/unix directory and the /unix directory to be a symbolic link to the binary for the desired kernel.

☛ Run the bosboot command to write a new system boot image.

☛ Reboot the system.

The path name of the 64-bit kernel is /usr/lib/boot/unix_64, and the

path name of the multiprocessor versions of the 32-bit kernel is

/usr/lib/boot/unix_mp.

☛ # ln -sf /usr/lib/boot/unix_mp /unix

☛ # ln -sf /usr/lib/boot/unix_mp /usr/lib/boot/unix

☛ # lslv -m hd5

☛ # bosboot -ad /dev/ipldevice

☛ # shutdown -Fr

☛ # bootinfo -K (should now be 32)