Asus LSI SAS3442X-R - Manual (Page 35)

Other Configuration Tasks 3-11
Version 1.1 Copyright © 2006, 2007 by LSI Logic Corporation. All rights reserved.
The current topology is displayed. If the selection of a boot device is
supported, the bottom of the screen lists the Alt+B option. This is the
key for toggling the boot device. If a device is currently configured as
the boot device, the Device Info column on the SAS Topology screen
will show the word “Boot.”
3. To select a boot disk, move the cursor to the disk and press Alt+B.
4. To remove the boot designator, move the cursor down to the current
boot disk and press Alt+B. This controller will no longer have a disk
designated as boot.
5. To change the boot disk, move the cursor to the new boot disk and
press Alt+B. The boot designator will move to this disk.
Note: The firmware must be configured correctly in order for the
Alt+B feature to work.