Fast disk cache writing system

Abstract

A disk cache writing system that substantially improves disk drive caching. A cache disk drive, or a reserved portion of a standard disk drive, is provided that is dedicated to cache data. Any of the current data of the disk drive or cache portion is temporary cache data that may be overwritten at any time. Cache data is written to a write section, including one or more sequential sectors, where the write section has a minimal write access time. The write section begins at a first offset sector associated with a minimal write access time, or at any one of several potential start sectors including the first offset sector. One or more potential start sectors are determined, where each corresponds with a first start sector in a current track to avoid moving the R/W heads from the current track. The only initial delay that is encountered is the delay to switch the R/W heads from read to write. The potential start sectors are aligned within the same current cylinder of the disk drive since all the R/W heads are aligned. The only other delay(s) that may be encountered are the characteristic delays associated with writing to sequential sectors of the chosen disk drive that are otherwise unavoidable, such as delays associated with switching sequential tracks, heads, surfaces, platters, etc.