Deleting Objects on WORM Media
Original Publication Date: 1989-Dec-01
Included in the Prior Art Database: 2005-Jan-29
Mapping PC DOS commands to optical devices accomplishes five functions for objects on WORM (Write Once, Read Many) technology while integrating those functions into existing office products and PC processing. Those functions are the DOS commands DIR, DELETE (DOS ERASE), RENAME, MKDIR, and RMDIR. Performing these functions for objects on WORM media is accomplished by using a "Directory Entry Table" which is stored on the optical volume with the individual objects. Each object stored on the optical volume is identified by a directory entry in one of these directory entry tables. Each directory entry contains, among other things, the object name, object size, optical write date/time, and optical volume address. An example of the directory entry table is shown in Fig. 1.