IBM SG24-4576-00 manual Security

Memory Gap: Some ISA network adapters need to be mapped in system memory address space, normally at the upper end. Since the ISA bus is limited to 24-bit addressing (0-16 MB), systems with more than 16MB of memory installed will not accommodate these adapters.

When enabled, this selection will remap system memory such that a gap is created between the addresses of 15 and 16MB. This gap is then used to map the I/O space on the adapter into this area.

3.1.3 Security

The Security option allows the user to:

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Set the supervisor password. Set the power on password. Modify the diskette access rights. Set the fixed disk boot sector.

To reach the security panel from the Advanced - Peripherals panel:

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Press ESC to quit the Peripherals menu. Press ESC again to quit the Advanced menu. Use the arrows keys to select the Security menu. Press Enter.

A screen like the one in Figure 27 will appear:

	￿								￿
		Phoenix		BIOS Setup - Copyright 1985-94 Phoenix				Technologies Ltd.
		￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿
		Main		Advanced		￿Security￿	Exit	￿
		￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿
								￿
		Supervisor Password is				Disabled		￿
		User	Password		is	Disabled		￿
		Set	Supervisor		Password	[Press	Enter]	￿
		Set	User	Password		Press	Enter	￿
								￿
		Password		on Boot:		[Disabled]		￿
								￿
		Diskette		access:		[User]		￿
		Fixed disk boot sector				[Normal]		￿
								￿
								￿
								￿
								￿
								￿
								￿
								￿
								￿
	￿							￿	￿
Figure			27.	PC Server 320 Setup Program - Security Menu

Set the Supervisor/User passwords: Two levels of passwords are available with IBM PC Server PCI/EISA systems:

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Supervisor password which enables all privileges

User password which has all privileges except:

−Supervisor password option

−Diskette access option if supervisor selected for this option (see Diskette access rights below)

−Fixed disk boot sector option

If either password is set, at boot time you will see:

Chapter 3. H a r d w a r e Configuration 71