Maxtor 10K III manual Format Unit Defect List Header-Data Format, FOV Dpry Dcrt Stpf DSP

SCSI Description

￿￿￿￿￿￿￿￿(14/#6The FORMAT￿70+6￿&GHGEVUNIT￿.KUVDefect￿*GCFGTList￿Header (Table 5-15)provides several optional format control bits to give the initiator more control over the defect lists. Table 5-16provides descriptions of the data fields in the Defect List Header

.FORMAT UNIT Defect List Header-Data Format

				Reserved
	FOV	DPRY	DCRT	STPF	IP	DSP	Immed	VS
2-3				Defect List Length

$[VG$KV			FORMAT UNIT Defect￿List Header￿-Field Descriptions￿		￿	￿
	Table		5-16
0COGFOV			The Format Options Valid bit indicates&GUETKRVKQPthat the remaining option bits in this byte
			are valid. If this bit is not set, the remaining bits, except Immed, are ignored.
			during the format to identify defective areas on the media. The drive's default
DPRY			is 0, indicating that the drive should replace sectors found in the Primary Defect
			List during the format.
			The Disable Certification bit specifies whether the drive should certify the media
DCRT			during the format. The drive’s default is 0, indicating that the drive should certify
			the media.
			The Stop Format bit specifies the error conditions under which the drive is to
STPF		Tableterminate5-15		the format. The state of the bit is ignored and the drive acts as if this
			bit is set. If either the Grown Defect List or the Primary Defect List is not found,
			the format operation terminates with a CHECK CONDITION status and a sense
			key of MEDIUM ERROR
			The Initialization Pattern bit signals the drive that the FORMAT UNIT Parameter
			List contains initialization pattern information.
			An Initialization Pattern bit of 1 indicates that an initialization pattern descriptor
IP			(Table 5-17)is included in the FORMAT UNIT parameter list immediately follow-
			ing the Defect List Header.
			An Initialization Pattern bit of 0 indicates that an initialization pattern descriptor
			(Table 5-17)is not included in the FORMAT UNIT parameter list, and the drive
			will use its default initialization pattern of all zeros.
			TheDisableSavingParameterprohibitsthedrivefrompreservingMODESELECT
DSP			parameters received while the Format is in progress. This bit is ignored, and the
			drive acts as if it were set.
			When the Immediate bit is 0, the drive returns a status after the format operation
			completes. If the disconnect privilege is granted in the accompanying IDENTIFY
			message, the drive disconnects from the bus after fetching and validating the
			Command Descriptor Block and the FORMAT UNIT Parameter List. If the discon-
			nect privilege is not granted, the drive stays connected to the bus during the
Immed			entire FORMAT UNIT command. When the Immediate bit is set to 1, the drive
			returns a status after the Command Descriptor Block and FORMAT UNIT Param-
			eter List have been fetched and validated. In this case, the drive ignores the
			IDENTIFY message's disconnect privilege bit and remains connected to the bus
			while it validates the Command Descriptor Block and Parameter List. It returns
			the completion status before it disconnects. The drive then proceeds with the
			format.
VS			Vendor-specific. Must be 0.
			that follow. A value of 0 is valid and means that no Defect Descriptors follow.
Defect List Length			A CHECK CONDITION status is returned if this value is not a multiple of the de-
			fect descriptor size. The Defect List Length is equal to four times the number of
			defect descriptors if Block format is used, or eight times if Bytes From Index for-
			mat or Physical Sector format is used.

Maxtor Atlas 10K III 5-17