Lenovo 3000 Series - Manual (Page 50)

Lenovo Notebook Computer User Guide
The Boot menu allows you to specify the order in which the
Notebook checks for a device to boot the system. Bootable devices
include floppy disk drives, hard disk drives, Network Boot and
optical disc drives. To make changes, select Boot from the menu bar.
3.2.5.1 Boot priority order menu
This option allows you to alter the boot priority. The system uses
this priority to search for the boot device on system power up
according to the numerical order.
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