The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 2004
Filed:
Sep. 27, 2000
Hiroshi Itoh, Sagamihara, JP;
Naotaka Kato, Fujisawa, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
To provide a general-purpose method of making it possible to easily realize the switching of an OS, which is booted on a computer, among OSs, the present invention downloads information for booting a second OS in a state of a first OS operating on the computer with access to a homepage, reception of e-mail, or the like ( ), starts a device driver after password verification, and requests the hook of OS termination ( to ). The device driver performs the processing of hooking the OS termination according to the request, and suspends the processing after loading a boot image file or the like, which are downloaded, into a main storage unit ( ). When the OS is terminated, the device driver restarts the processing and starts a patch program after changing a processor mode ( and ). Owing to this, after various types of preprocessing are performed, the second OS is booted by using the boot image file loaded into the main storage unit.