## Storage Device Driver Reference

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### READ CD-ROM CAPACITY (25h)

The READ CD-ROM CAPACITY command provides a means for the initiator to request information regarding the capacity of the logical unit. The capacity is based on the starting address of the lead-out area minus one. The logical block address returned is the address of the last user accessible block on the disc.

Refer to the ANSI SCSI-2 specification for a detailed description of this command.