Fall Back to the Source Boot Environment

Three procedures for falling back depend on your new boot environment activation situation:

• The activation is successful, but you want to return to the original boot environment. See "To Fall Back Despite Successful Boot Environment Creation".

• The activation fails and you can boot back to the original boot environment. See "To Fall Back From a Failed Boot Environment Activation".

• The activation fails and you must boot back to the original boot environment by using media or a net installation image. See "To Fall Back to the Original Boot Environment by Using a DVD, CD, or Net Installation Image".

To Fall Back Despite Successful Boot Environment Creation

In this example, the original c0t4d0s0 boot environment is reinstated as the active boot environment although it activated successfully. The device name is first_disk.

# /usr/sbin/luactivate first_disk 
# init 6

To Fall Back From a Failed Boot Environment Activation

In this example, the new boot environment was not bootable. You must return to the OK prompt before booting from the original boot environment, c0t4d0s0, in single-user mode.

OK boot net -s
# /sbin/luactivate first_disk
Do you want to fallback to activate boot environment c0t4d0s0 
(yes or no)? yes
# init 6

The original boot environment, c0t4d0s0, becomes the active boot environment.

To Fall Back to the Original Boot Environment by Using a DVD, CD, or Net Installation Image

In this example the new boot environment was not bootable. You cannot boot from the original boot environment and must use media or a net installation image. The device is /dev/dsk/c0t4d0s0. The original boot environment, c0t4d0s0, becomes the active boot environment.

OK boot net -s
# fsck /dev/dsk/c0t4d0s0
# mount /dev/dsk/c0t4d0s0 /mnt 
# /mnt/sbin/luactivate
# umount /mnt 
# init 6