Verify the DVD RAM cartridge is OS2/UDF formatted and has a volume label of ACTBKP. DVD RAM cartridges provided by IBM for backing-up critical data are labelled externally to indicate this purpose. Insert the DVDRAM cartridge that will be used for the backup.
If you inserted the correct cartridge, verify either that it has no internal volume label or that its internal volume label is ACTBKP. To check the volume label of a DVD RAM cartridge, use the OS/2 command: 'CMDREF.INF "VOL - Display Disk Volume Label'
If necessary, assign the DVD RAM cartridge one of the valid volume labels: either no volume label or ACTBKP. To assign a formatted DVD RAM cartridge no volume label or a new volume label, use the OS/2 command: 'CMDREF.INF "LABEL - Create or Change Volume Label'