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:
Mar. 04, 1997
Filed:
Sep. 01, 1994
Applicant:
Inventor:
James G Letwin, Kirkland, WA (US);
Assignee:
Microsoft Corporation, Redmond, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395621 ; 364D / ; 364D / ; 395412 ; 395181 ;
Abstract
A method and system for storing file system state information within sectors of the file system. File system information includes pointers to top-level file system structures, such as free space bitmaps, a bad block list, a directory block band, and a root directory. The file system state information is classified into two groups: frequently-updated information and infrequently-updated information. The two groups are stored on separate sectors in order to minimize write operations performed on the infrequently-updated information and thereby reduce the risk of the infrequently-updated information being corrupted.