US 2008/0288767 A1Published application

Computer system

AssigneeASUSTeK COMPUTER INC.

InventorsChin-Yu Wang, Hsien-Shan Wang

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Abstract

The invention provides a computer system, which includes a motherboard, a nonvolatile memory and a chipset provided on the motherboard. The nonvolatile memory stores a first BIOS and a second BIOS. The chipset has an external flag having a first state and a second state corresponding to the first BIOS and second BIOS, respectively. When the external flag is in the first state, the motherboard is booted by the first BIOS. When the external flag is in the second state, the motherboard is booted by the second BIOS. When one BIOS is booted according to the state of the external flag, if the BIOS is damaged, the other complete BIOS is booted and is used to update the damaged BIOS program.

Claims12

Dependent claims

A computer system comprising:

a motherboard;
a nonvolatile memory disposed on the motherboard and used for storing a first BIOS and a second BIOS, wherein each of the first BIOS and the second BIOS has a BIOS image, a non-volatile random access memory (NVRAM) area, a system management BIOS (SMBIOS) and a boot block;
and
a chipset disposed on the motherboard and having an external flag having a first state and a second state corresponding to the first BIOS and the second BIOS, respectively, wherein when the external flag is in the first state, the motherboard is booted by the BIOS image of the first BIOS, and when the external flag is in the second state, the motherboard is booted by the BIOS image of the second BIOS
wherein when the BIOS image of one of the first BIOS and the second BIOS is started according to the state of the external flag, if the BIOS image is damaged, the other complete BIOS image is started and is used to update the damaged BIOS image.

2 more elements

Dependencies are inferred from the claim text.