Changing the Startup Disk in System Preferences
If Mac OS X Server starts up by default on your Xserve, you can use System Preferences 
to change the startup disk. The list of startup volumes includes internal volumes and 
connected portable storage device volumes.
When you change the startup disk in System Preferences, you can’t select a startup disk 
with AXD EFI tools installed. To change the startup disk to the volume with AXD EFI 
tools installed, change the startup disk at startup. For more information, see “Changing 
the Startup Disk Temporarily at Startup” on page 16.
To change the startup disk in System Preferences:
1
Open System Preferences on the Xserve, and then select Startup Disk.
2
If the lock icon is locked, click it, and then authenticate as a system administrator.
3
Select the startup disk with the AXD tools and click Restart.
After you’re done using AXD tools, change the startup disk back to the volume you 
were previously using.