SPARC: To Fall Back From a Failed Boot Environment Activation

• If you experience a failure while booting the new boot environment and can boot the original boot environment in single-user mode, use this procedure to fall back to the original boot environment.

• If you need to boot from media or a net installation image, see SPARC: To Fall Back to the Original Boot Environment by Using a DVD, CD, or Net Installation Image.

Steps

1. At the OK prompt, boot the machine to single-user state from the Solaris Operating System DVD, Solaris Software - 1 CD, the network, or a local disk.

   OK boot device_name -s

   device_name

   Specifies the name of devices from where the system can boot, for example /dev/dsk/c0t0d0s0

2. Type:

   # /sbin/luactivate BE_name

   BE_name

   Specifies the name of the boot environment to be activated

   • If this command fails to display a prompt, proceed to SPARC: To Fall Back to the Original Boot Environment by Using a DVD, CD, or Net Installation Image.

   • If the prompt is displayed, continue.

3. At the prompt, type:

   Do you want to fallback to activate boot environment <disk name> (yes or no)? yes

   A message displays that the fallback activation is successful.

4. Reboot.

   # init 6

   The previous working boot environment becomes the active boot environment.