HP 520 5/XX, 525 5/XX manual Security Menu Bios version GX.07.xx

4 Summary of the HP/Phoenix BIOS

HP/Phoenix BIOS (BIOS version: GX.07.xx)

Disabling a device in the Configuration Menu (for example, Serial port B in the diagram above) has the advantage of freeing the resources (such as IRQs and peripheral addresses). Disabling a device in the Security Menu disables the access, does not free the resources, but has the advantage of temporarily disabling the device without losing the configuration settings.

Under the “Memory and Cache” sub-menu, memory caching can be set to internal only, disabled or both; the memory hole can be enabled between 15 MB and 16 MB1; the graphic POST can be disabled if there is a Display Option ROM installed; the shadow/cache ISA option ROMs can be made accessible if detected as being fitted.

Under the “IDE” sub-menu,multi-sector transfers can be disabled, or set to 2, 4, 8, or 16; the translation method can be set to extended or standard; the integrated bus adapters can be set to none, primary=IRQ15, secondary=IRQ14, or both.

Security Menu (BIOS version: GX.07.xx)

Sub-menus are presented for changing the characteristics and values of the User Password, the System Administrator Password, the amount of protection against use of the system’s drives and network connections (using the Hardware Protection sub-menu), and the amount of protection against being able to boot from the system’s drives and network connections (using the Start-Up Centre sub-menu).

The minimum lengths of either type of password can be set to a specific number of characters, or to none. The maximum length of each is

32 characters. A limit can be set for the maximum number of retries that are permitted if the password is mistyped, and whether a delay should be imposed (of successively increasing lengths: 4 seconds, 8 seconds,

16 seconds, and finally 32 seconds) before successive retries are accepted (using the exponential setting for the “Lock Time Between Attempts” field).

The “User Password” sub-menu grants access to the keyboard lock timer option. Once this password has been set, the menu gives access to the main sub-menu of user preferences.

Under the “Hardware Protection” sub-menu, the following devices can have their access unlocked/locked: flexible disk controller, IDE controllers, serial and parallel ports, network controller. Writes to the flexible disk can

1.available only if ≥ 16 MB.

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