HP RX2600 Bedienungsanleitung PDF herunterladen (Seite 58)

Version 1.2 Page 44 4/22/04

Extensible Firmware Interface (EFI) Boot Manager

EFI (Extensible Firmware Interface) is an operating system and platform-independent boot and pre-boot

interface. EFI lies between the operating system and platform firmware, allowing the operating system to

boot without having details about the underlying hardware and firmware. EFI supports boot devices, uses a

flat memory model, and hides platform and firmware details from the operating system.

NOTE EFI and Pre-OS System Environment (POSSE) are similar. EFI is an Intel specification, whereas

POSSE is the HP implementation that aids HP support.

EFI supports booting from media that contain an EFI OS loader or an EFI-defined System Partition. An

EFI-defined System Partition is required by EFI to boot from a block device.

EFI Boot Sequence

Extensible Firmware Interface (EFI) Boot Manager

The EFI boot manager loads EFI applications (including OS first stage loader) and EFI drivers from an

EFI-defined file system or image loading service. NVRAM variables point to the file to be loaded. These

variables contain application specific data that are passed directly to the EFI application. EFI variables

provide system firmware a boot menu that points to all the operating systems, even multiple versions of the

same operating systems.

The EFI Boot Manager allows you to control the server’s booting environment. Depending on how you

have configured the boot options, after the server is powered up the Boot Manager presents you with

different ways to bring up the system. For example, you can boot to the EFI Shell, to an operating system

located on the network or residing on media in the server, or the Boot Maintenance menu.

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HP RX2600 Bedienungsanleitung Seite 58