On the Boot Manager screen, use the arrow keys to reorder the priority list for boot devices. The BIOS reads the devices from top to bottom in determining the method for booting into the operating system.
For example, if you want the tablet to boot from a DVD whenever a user inserts a disc and the HDD installation when there is no operating system disc, make sure to place the DVD device, such as USB DVD, higher on the list than the HDD with the operating system installation, such as ATA HDD0.
Parent topic: Tablet 721/721P BIOS Configuration