Mark, Reading SMC 6.3 EXCHANGE MEDIUM COMMAND ... When processing an EXCHANGE MEDIUM command, the device server shall terminate the command with CHECK CONDITION status and shall set the sense key to ILLEGAL REQUEST and the additional sense code to MEDIUM REMOVAL PREVENTED BY DATA TRANSFER ELEMENT if: a. the element address specified in the SOURCE ADDRESS field or the FIRST DESTINATION ADDRESS field represents a data transfer element; b. the device server detects a prevention of medium removal condition exists within the data transfer device (see applicable command standard); and c. the device server does not allow moves from an element associated with a data transfer device that has a prevent medium removal condition. ... If we now start implementing PAMR SMC should fail EXCHANGE MEDIUM commands for SMC if the DT device has a prevent lock on it right? regards ronnie sahlberg -- To unsubscribe from this list: send the line "unsubscribe stgt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html