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Technical Reference Guide www.hp.com 8-1
8
System BIOS
8.1 Introduction
The Basic Input/Output System (BIOS) is firmware contained in Read Only Memory (ROM) and
includes such functions as Power-On Self Test (POST), PCI device initialization, Plug 'n Play
support, power management activities, and the Setup utility. The firmware contained in the
system BIOS ROM supports the following operating systems and specifications:
■ Windows XP (Home and Professional versions)
■ Windows Vista Business 32-/64-Bit
■ Windows Vista Enterprise 32-/64-bit
■ Windows Vista Home Basic 32-/64-Bit
■ Windows Vista Home Premium 32-/64-Bit
■ Windows Vista Ultimate 32-/64-Bit
■ Windows 7 32-Bit Enterprise/Home Basic/Home Premium/Professional/Ultimate
■ Windows 7 64-Bit Enterprise/Home Basic/Home Premium/Professional/Ultimate
■ SCO Unix
■ Intel Wired for Management (WfM) ver. 2.2
■ ACPI and OnNow
■ SMBIOS 2.6
■ Intel PXE boot ROM for the integrated LAN controller
■ BIOS Boot Specification 1.01
■ Enhanced Disk Drive Specification 3.0
■ “El Torito” Bootable CD-ROM Format Specification 1.0
■ ATAPI Removeable Media Device BIOS Specification 1.0
■ Serial ATA Advanced Host Controller Interface (AHCI) 1.2
■ ATA with Packet Interface (ATA/ATAPI-7)
The BIOS used in these systems supports the Unified Extensible Firmware Interface (UEFI)
environment, which allows access to technical information about the computer and includes
diagonostic and repair tools.