Switching 32 to 64 bit Kernel

Use the ln command to create two symlinks. Enter:
ln -sf /usr/lib/boot/unix_64 /unix
ln -sf /usr/lib/boot/unix_64 /usr/lib/boot/unix

Use the bosboot command to create boot image. Enter:
bosboot -ad /dev/ipldevice

Reboot your system. Enter:
shutdown -Fr