BIOS setup

(redirected from CMOS setup)

BIOS setup

A program used to edit hardware settings in the BIOS of a PC. On earlier PCs, users had to change a setting when a new drive was added, but auto-detect features were later added. Although some settings are quite arcane and modified only by experienced technicians, users sometimes may need to make a change, such as the boot order of the PC (see first boot sequence).

From CMOS to Flash
The BIOS setup has also been called the "CMOS setup" or "CMOS RAM," because settings were initially held in a battery-backed CMOS memory circuit. Subsequently, BIOS settings were stored in non-volatile flash memory.

Accessed at Startup
The BIOS setup is accessed at startup. Soon after a PC is turned on, a short screen message typically passes by very quickly indicating which key to press (usually Esc, F1, F12 or Del). See BIOS, hard disk configuration, BIOS Upgrades and CMOS.
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References in periodicals archive ?
The virus executes its payload on 25 December erasing the CMOS setup and attempting to corrupt the BIOS chip, making the computer unusable.
The normal boot- up process starts in the BIOS where you can set the options for your system through the CMOS setup. The most common options are to boot from a floppy in A drive, C drive or from a CD-ROM.
Unauthorized access must be denied to the computers' internal CMOS setup menus, the operating system (e.g., DOS), GUI (e.g., Windows), critical files, and hard disks.
The CPUs' CMOS setup menus should be passworded (a feature usually available on modern microcomputers) and should be accessible only to the security staff; these passwords should not be character strings that can be found in any dictionary.