I have found this rather useful Commodore 64 Reference Guide which has the following useful sections in just three small pages. The doc covers: COMMODORE FILE TYPES AND USES COMMODORE 64 BASIC DISK COMMANDS COMMODORE 128 BASIC DISK COMMANDS COMMODORE DOS WEDGE DISK COMMANDS DATEL ACTION REPLAY DISK COMMANDS JIFFY DOS DISK COMMAND ON FUNCTION … Continue reading Useful C64 / C128 Disk Commands Reference Guide PDF