Title:
The method, computer program, and computer which restore a variable set
Document Type and Number:
Japanese Patent JP6054908
Kind Code:
B2
Abstract:
A set of variables referred to by unified extensible firmware interface (UEFI) firmware is restored. The UEFI firmware stored in a read-only memory (ROM) is firstly executed after power-up. The UEFI firmware writes a variable set related to boot, into a variable area. As an operating system (OS) also writes a set of variables into the variable area, the boot-related variable set may be altered. The variable set is saved into a prescribed area, such as a universal serial bus (USB) memory key, when the computer boots normally. If alteration of the variable set in the reference area is detected during a boot of the computer, the variable set in the reference area is replaced with the saved variable set. The variable set alteration may be detected using a detection flag which is set immediately after a boot is started and reset immediately before an OS is loaded.
Inventors:
Mikio Hagiwara
Eitaro Kasamatsu
Eitaro Kasamatsu
Application Number:
JP2014106076A
Publication Date:
December 27, 2016
Filing Date:
May 22, 2014
Export Citation:
Assignee:
Lenovo Singapore Private Limited
International Classes:
G06F9/445
Domestic Patent References:
| JP2013140536A | ||||
| JP2002014818A | ||||
| JP2009015818A | ||||
| JP2000235483A |
Foreign References:
| US20050039081 |
Attorney, Agent or Firm:
Hiromichi Watanabe
Masashi Hakamada
Masashi Hakamada
Previous Patent: An electric conduction material mix thing and its use
Next Patent: PREPARATION OF CARBON MATERIAL
Next Patent: PREPARATION OF CARBON MATERIAL