HP Surestore 80fx Optical Drive and Library SCSI-2 Command Reference - Page 54

SCSI-2 Drive Commands Table 2-11 SCSI-2 Drive Command Set Format Unit Command (04H) Format Unit Command Defect List The Format Unit command Defect List consists of the Defect List Header and zero or more multi-byte Defect Descriptor(s). Format Unit Defect List Header Byte 7 6 5 4 3 2 1 0 0 Reserved (0) 1 FOV Rsvd DCRT (0) Reserved (0) Immed Rsvd (0) 2 Defect List Length (MSByte) 3 Defect List Length (LSByte) FOV DCRT Immed Defect List Length A Format Options Valid bit of 1 indicates that the DCRT (Disable Certification) and Immed (Immediate) fields contain valid information. A FOV bit of 0 indicates that the DCRT and Immed fields do not contain valid information. A Disable Certification bit of 1 indicates the drive does not certify the optical disk during the format process. A DCRT bit of 0 indicates that the drive certifies the optical disk during the format process. When the FOV bit is set to 0, the DCRT bit must also be set to 0. DCRT does not apply to Write-Once disks. When the Immediate bit is set to 1, it indicates a status of GOOD is returned before the format operation is begun. An Immed bit of 0 indicates a GOOD status is returned when the format is complete. The Defect List Length is the total length in bytes of the Defect Descriptors that follow. Chapter 2 2-17