x86: To Fall Back Despite Successful New Boot Environment Activation With the GRUB Menu

Use this procedure when you have successfully activated your new boot environment, but are dissatisfied with the results. You can quickly switch back to the original boot environment by using the GRUB menu.

The boot environments that are being switched must be GRUB boot environments that were created with GRUB software. If a boot environment was created with the Solaris 8, 9, or 10 3/05 release, the boot environment is not a GRUB boot environment.

1. Become superuser or assume an equivalent role.

   Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.

2. Reboot the system.

   # init 6

   The GRUB menu is displayed. The Solaris OS is the original boot environment. The second_disk boot environment was successfully activated and appears on the GRUB menu. The failsafe entries are for recovery if for some reason the primary entry does not boot.

   GNU GRUB version 0.95 (616K lower / 4127168K upper memory) +-------------------------------------------------------------------+ |Solaris | |Solaris failsafe | |second_disk | |second_disk failsafe | +-------------------------------------------------------------------+ Use the ^ and v keys to select which entry is highlighted. Press enter to boot the selected OS, 'e' to edit the commands before booting, or 'c' for a command-line.

3. To boot to the original boot environment, use the arrow key to select the original boot environment and press Return.

Example 6–1 To Fall Back Despite Successful New Boot Environment Activation

# su
# init 6

GNU GRUB version 0.95 (616K lower / 4127168K upper memory)
+-------------------------------------------------------------------+
|Solaris                                                            |
|Solaris  failsafe                                                  |
|second_disk                                                        |
|second_disk failsafe                                               |
+-------------------------------------------------------------------+
Use the ^ and v keys to select which entry is highlighted. Press
enter to boot the selected OS, 'e' to edit the commands before
booting, or 'c' for a command-line.

Select the original boot environment, Solaris.