PREVENT/ALLOW Medium Removal command, Sense KEY | Fujitsu MCJ3230SS

4.3 SCSI Commands

4.3.10 PREVENT/ALLOW MEDIUM REMOVAL command

Table 4.48 PREVENT/ALLOW MEDIUM REMOVAL command

Bit	7	6	5		4		3	2	1	0
Byte	7	6	5		4		3	2	1	0
Byte
0				Operation Code (1Eh)
1		LUN						Reserved
2-3					Reserved

4					Reserved					Prevent
5					Reserved

The PREVENT/ALLOW MEDIUM REMOVAL command enables or disables media ejection from the device.

If the Prevent bit is 0, ejection is enabled. If the Prevent bit is 1, ejection is disabled.

At power-on, media ejection is enabled by default.

When unwritten data remains in the write cache, media ejection is enabled after the data is written to the media.

SCSI Reset or Bus Device Reset releases the disabled state and enables ejection.

Table 4.49 Responses to Prevent, Allow, and Eject

	Operation	Status at	If no media is loaded	If media is loaded
	Operation	operation	If no media is loaded	If media is loaded
		operation

	Prevent = 0	Enabled	No error	No error

		Disabled	No error	No error
		Disabled	No error	No error
		Enabled	No error	No error.	Media ejection is
	Prevent = 1	Enabled	No error		disabled.
	Prevent = 1				disabled.
		Disabled	No error	No error
	Eject	Enabled	No error	No error.	The cartridge is
	(Ejection by	Enabled	No error		ejected.
	(Ejection by				ejected.
	START/STOP UNIT	Disabled	Error: SENSE KEY 5	Error:	SENSE KEY 5
	command)	Disabled	ASC/ASCQ 5302		ASC/ASCQ 5302
	command)		ASC/ASCQ 5302		ASC/ASCQ 5302

	Eject	Enabled	No status change	The cartridge is ejected.
	(Ejection by the eject	Disabled	No status change	No status change; media
	switch)	Disabled	No status change	ejection remains disabled.
	switch)			ejection remains disabled.

C156-E224-01EN

4-31

Image 105

Fujitsu MCJ3230SS manual PREVENT/ALLOW Medium Removal command, Responses to Prevent, Allow, and Eject, Sense KEY, Asc/Ascq

Contents

MCJ3230SS Optical Disk Drive Product Manual Handling of This Manual For Safe Operation Revision History This page is intentionally left blank Overview of Manual Preface Conventions for Alert Messages GlossaryAcronyms and Abbreviations Preface Disclaimer Important Alert Items Low temperature burnsImportant Alert Messages Device damage Damage for disk medium Damage for data mediumEye inflammation Data loss This manual ISO/IEC *1 Scsi AnsiISO/IEC JTC1 *1 Fujitsu Limited Contents Installation Requirements 6.6 Host Interface Diagnosis and Maintenance Operation and Cleaning C156-E224-01EN Xiii Figures Illustrations Revision label Revision number indication Tables Power consumption in power save mode C156-E224-01EN Xvii This page is intentionally left blank General Description Performance Features Reliability Features Adaptability Maintainability/operability Interface General Description Drive model Drive Configuration Optical disk drive configuration Configuration Mechanical sections Control circuit section Control circuit section block diagram Drive Configuration This page is intentionally left blank Optical Disk Drive Specifications SpecificationsModel and product number Model and order number Specifications 1 Drive specifications Density Specifications 2 Environmental and power requirements 1 Environmental and power requirements Ietm Environmental and power requirements 2 MTBF= Error rate Optical Disk Cartridge Specifications Recommended optical disk cartridge specificationsRecommended optical disk cartridge specifications Optical disk cartridge Optical disk cartridge Disk specifications Disk specifications Defect Management Defect management schematic diagram Example of alternate processing Installation Requirements Temperature measurement pointEnvironmental Requirements Surface temperature measurement points Temperature requirements and measuring method Temperature requirements at measurement pointsAir flow Temperature rise under several conditions Temperature at each measuring point ReferenceAir purity Mounting Requirements External dimensions Dimensions without panel Installation directions Installation direction Centers of gravity Centers of gravity Mounting frame structure Service clearance Current waveform +5 VDC Power Supply Requirements Cable Connections Drive connectors 11 Shape of setting terminal Pin assignments Recommended components for connection Cable connector specifications 12 Scsi bus connection modes Connection Modes 13 Scsi bus connection modes Default jumper settings SettingsSetting terminal Scsi ID setting CNH2 Write cache mode setting Scsi terminating resistor mode Spindle motor automatic stop mode setting General notes Installation Requirements 15 Packing style Mounting procedure MountingChecks before mounting the drive Cable Connections Confirming initial operations Connection check Dismounting Drive This page is intentionally left blank Host Interface Interface Connector Scsi interface connector cable side MSG SEL Scsi interface connector pin assignments single-ended type Various Processes Reset responseDefective sector management Automatic alternate sector assignment function Cache function Data bufferRead cache Power management function Power modeMO write cache Pre-idle mode Active modeIdle mode Standby mode Power mode Power mode transition LED indications LED indications Scsi commands Scsi Commands Test Unit Ready command Test Unit Ready commandInquiry command Inquiry command response data Mode Select command Read Capacity commandRead Capacity command Mode Select command 10 Mode page codes 11 Mode parameter list12 Mode parameter header 14 Mode 15 Read/write error recovery13 Block descriptor Default values in the read-write error recovery 16 Variable values in the read-write error recovery 18 Flexible disk Variable values in the flexible disk 24 Power condition 21 Caching22 Variable values in the Caching 25 Variable values in the Power condition 26 Default values in the Power conditionVerify control 28 Verify mode Default values in the Verify controlVariable values in the Verify control Mode Sense command 31 Mode Sense commandControl field 33 Mode parameters 34 Mode Parameter Header35 Block Descriptor 36 Mode START/STOP Unit command37 START/STOP Unit command 38 Start, stop, and eject processing 39 Reserve command Reserve command Request Sense command Release command40 Release command 41 Request Sense command 42 Request Sense Data 43 Error Code 45 Logical track address format 44 Sense Key 46 ASC and Ascq definitions 47 Format progress indication bytes 48 PREVENT/ALLOW Medium Removal command PREVENT/ALLOW Medium Removal command49 Responses to Prevent, Allow, and Eject Sense KEY Read 10 command Read 6 command50 CDB of Read 6 command 51 Read 10 command Write 6 command Verify command52 Verify command 53 CDB of Write 10 command Write 10 command 54 Write 10 command55 Write and Verify command Seek 10 command Seek 6 command56 Seek 6 command 57 Seek 10 command Synchronize Cache command Erase command58 Erase command 59 Synchronize Cache command 60 Format Unit command Format Unit command61 Format Unit parameter list 62 Defect List Header 63 Read Defect Data command Read Defect Data command64 Defect List Format of Read Defect Data 10 command 65 Defect list header of Read Defect Data 10 command Receive Diagnostic Results command Send Diagnostic command Write Buffer command 70 Write Buffer commandDiml Write Long command Read Long command71 Read Long command 72 Write Long command Message formats Scsi MessagesMessage types 73 Types of messages provided by ODD Message functions LUN 74 Transfer mode settings requested by Init to ODD Timing Rule 75 Timing specifications 1 75 Timing specifications 2 75 Timing specifications 3 BUS Free phase 76 Fast Scsi Timing specifications Arbitration phase Selection phase Transfer in asynchronous mode Transfer in Fast Scsi mode 10 Attention condition Operating Optical Disk Drive Operation and Cleaning Optical disk drive front view with panel Optical disk drive Operating Optical Disk Drive Inserting cartridge Inserting cartridge Removing cartridge Ejecting removing cartridge Head cleaner Cleaning Drive Optial disk cartridge Optical Disk Cartridge Operation Write protect tab Write protect tab How to stick an index label on the MO cartridge How to affix an index label on the MO cartridge See figure Operation and Cleaning Cleaning tool Cleaning Optical Disk CartridgeCleaning kit Packed items cleaning kit Cleaning procedure Cleaning procedure Cleaning procedure 10 Cleaning procedure Self-diagnostic function Diagnosis and MaintenanceDiagnosis Initial self-diagnosis Test program Diagnostic command Maintenance requirements Maintenance Information REV. no Revision number Glossary Error detection and correction Error correction codeRecording power Disk reference surface Status This page is intentionally left blank Acronyms and Abbreviations ODF ODDOEM PCA Index Index Fujitsu Internal Use Only Index Write and Verify command Fujitsu Limited This page is intentionally left blank MCJ3230SS Optical Disk READER’S Comment Form