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In computing, BIOS (/ ˈ b aɪ ɒ s,-oʊ s /, BY-oss, -ohss; Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS) is firmware used to provide runtime services for operating systems and programs and to perform hardware initialization during the booting process (power-on startup). [1]
The Absolute Home & Office client has trojan and rootkit-like behaviour, but some of its modules have been whitelisted by several antivirus vendors. [6] [8]At the Black Hat Briefings conference in 2009, researchers showed that the implementation of the Computrace/LoJack agent embedded in the BIOS has vulnerabilities and that this "available control of the anti-theft agent allows a highly ...
A modern PC is configured to attempt to boot from various devices in a certain order. If a computer is not booting from the device desired, such as the floppy drive, the user may have to enter the BIOS Setup function by pressing a special key when the computer is first turned on (such as Delete, F1, F2, F10 or F12), and then changing the boot order. [6]
Hewlett-Packard provided FreeDOS as an option in its HP Compaq dc5750 Small Form Factor PC, Mini 5101 netbooks and Probook laptops. [15] [16] [17] FreeDOS is also used as bootable media for updating the BIOS firmware in HP systems. [18] FreeDOS is included by Steve Gibson's hard drive maintenance and recovery program, SpinRite. [19]
The original motivation for EFI came during early development of the first Intel–HP Itanium systems in the mid-1990s. BIOS limitations (such as 16-bit real mode, 1 MB addressable memory space, [7] assembly language programming, and PC AT hardware) had become too restrictive for the larger server platforms Itanium was targeting. [8]
The BIOS firmware used on PCs; The (U)EFI-compliant firmware used on Itanium systems, Intel-based Macs, and many newer PCs; Hard disk drive, solid-state drive, optical disc drive and optical disc recorder firmware [5] Video BIOS of a graphics card
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