CBR4438D Volume in drive drive-name has unrecognized media format. Reply 'F' to format or 'C' to cancel.
Explanation
A cartridge has been entered into a 3995 library, or mounted on a 3995 operator-accessible drive as a result of a MODIFY OAM,LABEL command. The mounted volume has an unrecognizable media format. If OAM formats the volume, any data which currently exist on the volume will be destroyed.
System action
OAM waits for the operator response.
Operator response
If the cartridge contains useful data, or if cartridge contents are unknown, reply 'C'; OAM will eject the cartridge from the library or demount it from the operator-accessible drive without further processing. If the cartridge may be used, reply 'F'; OAM will proceed with the cartridge entry or LABEL operation in normal fashion. Formatting a rewritable cartridge can take 20-30 minutes to complete.
Source
Object Access Method (OAM)
Routing Code
2, 4, 6
Descriptor Code
2