A method and apparatus for defragmenting compressed file data stored on a disk. The method includes a first pass in which the FAT and MDFAT entries for each file stored on the disk are rearranged into adjacent clusters, but in which no movement of the compressed file data occurs. The method includes...http://www.google.de/patents/US5574907?utm_source=gb-gplus-sharePatent US5574907 - Two-pass defragmentation of compressed hard disk data with a single data rewrite
