## Storage Device Driver Reference

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### Mandatory SCSI-2 Command Support

The following table lists the SCSI-2 commands which must be supported. The command structure for the SCSI-2 command descriptor blocks are defined in the ANSI SCSI-2 standard X3T9.2/86-109 (SCSI-2 draft proposed American National Standard Revision 10g). Developers should refer to the ANSI SCSI-2 specification for a definition of each command. Usage notes for each command, as it relates to implementation under the OS/2 operating system, are included in the following sections.

Note: The Mode Select and Mode Sense commands need only support the Block Descriptor and the Audio Control Page (Page 0E).