Nowadays the protection of any information plays a very important role. But using BIOS, you can protect your computer only from unauthorized access of other users. In general, protection in BIOS is rather a remnant of the past than a necessity. But, from the other side, protection in BIOS could raise some barrier from unconscious changes of internal BIOS settings by your children.
BIOS can protect your computer in several ways: password protection of computer booting, password protection of changes in BIOS settings, the protection of boot section of the hard disk, locking the floppy writing and locking the hard disk reading/writing.
You can use a system of password protection to lock an access to computer booting or changes in BIOS settings. This system is active only till a user opens his system unit and opens the circuit of BIOS-battery. You might also perform such actions if you ever forget you access password.
To set passwords, use the commands “Supervisor password” or “User Password” (“Set Supervisor password” and “Set User Password”) which are situated in the main menu of BIOS settings. In some versions of BIOS these commands can be situated in the menu “Security”. The first command sets the supervisor password with full power, and the second command sets the user password with limited access.