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:
Apr. 16, 1996
Filed:
Nov. 30, 1993
Stanley L Merkin, Lake Worth, FL (US);
Bharat Khatri, Boca Raton, FL (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A computer system includes a system processor, an information storage apparatus, at least one booting device from which the computer system can be booted, and a detection apparatus for detecting a computer virus during a boot sequence for the computer system. The information storage apparatus contains information including cyclic redundancy check values for a Master Boot Record and for an operating system selected for booting. These CRC values are computed when the Master boot record and the operating system boot record are known to be free from computer viruses. The detection apparatus comprises: (1) apparatus for reading the master boot record and operating system boot record from the selected booting device; (3)apparatus for determining whether the boot records are valid; (4) apparatus for passing control of the CPU to the boot record of the device when it is determined that the boot record of the device is valid and for presenting a message to a user indicating that the boot record of the device is not valid, in the event that the boot record of the device is not valid.