Contact your supplier. 20 .CCC file on source is missing or invalid. Bug on the ICL 486 PC BIOS call to the floppy drive. Contact ICL for the latest BIOS upgrade. 21 .CCC file on destination is missing or invalid.
Destination is an invalid master disc.
Unable to create .CCC file in destination. Contact your supplier. 24 Error writing to .SYS file on destination. Contact your supplier. 25 Error writing to .CCC file on destination.