EFI Preboot Guidelines and Windows 8 UEFI Secure Boot for HP Business Notebooks and Desktops PPS Business Notebook and Desktop Technical white paper

ManualsBrandsHP ManualsDesktopsHP EliteBook 2570p Notebook PC (ENERGY STAR)

Windows Vista, Windows 7, and Linux systems don’t support UEFI Secure Boot. For these systems, enable Legacy

Support and disable Secure Boot. With Secure Boot disabled and Legacy Support enabled, note that both UEFI and legacy

boot sources are available for boot. This configuration allows for the most flexibility in booting from various devices, but

at the cost of not having Secure Boot.

The BIOS will base the boot sequence from the boot order list. If the first device on the boot order list is not bootable,

then BIOS will try the next device. The user can permanently change the boot order by changing the F10 Boot Order. For

a one-time boot order change, the user can use the Win8 interface to set Next Boot to a certain device. This will only be

effective at the next boot.

If the user presses F9 during POST, the BIOS will now enumerate all USB devices attached to the system and display a

dynamic F9 Boot Order list. For example, if there is one USB DVD and one USB hard disk attached to the platform and the

user disables the UEFI PXE IPV6 NIC boot, the static F10 Boot Order and the dynamic F9 Boot Order will be different.

Also the BIOS will pass the F9 Boot Order to the OS in such a case.

Figure 7: The dynamic F9 Boot Order and the static F10 Boot Order

F9 Boot Order

[ ] Legacy support

[✔] Secure Boot

Boot Options

[✔] UEFI PXE IPV4 NIC boot

[ ] UEFI PXE IPV6 NIC boot

[✔] USB

UEFI Boot Order

OS Boot Manager

USB Hard Drive

Notebook Ethernet IPV4

Notebook Ethernet IPV6

Notebook Upgrade Bay

eSata Drive

SD Card

HP Hypervisor

External USB DVD

External USB CD

Customized Boot

Delete Add

F10 Boot Order