Seagate MEDALIST 1080SL Product Manual page 45

Medalist 1080sl SCSI Product Manual, August 1995
Byte 1 of CDB
Bit 4 Bit 3 Bit 2–Bit 0
Fmt Cmp Defect List
Data Lst Format
1 1 1 0
3.4.4.3 Defect list header and defect list
The defect list, shown below, contains a 4-byte header, followed by one
or more defect descriptors. Byte 1 of the defect list header determines
whether the P and C defects are reallocated.
Bytes
7 6
0 0 0
1 FOV DPRY DCRT STPF
2–3
4– n
If the FOV bit is 1, the DPRY, DCRT and STPF bits are
Byte 1
interpreted. If the FOV bit is 0, the DPRY, DCRT and STPF
bits must be zeros.
The DPRY bit is always 0. The defects described in the
PList are reallocated during formatting. The drive sends a
check condition status if it cannot find the PList.
If the DCRT bit is 1, the drive does not verify the data written
during the format. Therefore, no CList for this format is
created or reallocated. If the DCRT is 0, the drive verifies
the data written during the format, creates a CList and
reallocates sectors that were unrecoverable.
If the STPF bit is 1, the drive stops formatting if it encounters
an error while accessing either the P or G defect list. If the
STPF bit is 0, the drive continues formatting even though it
has encountered an error while accessing either the P or G
defect list.
Description
Format option with DList only. The drive
erases any previous GList. The initiator
sends the defect list header, which may
1 be followed by a DList in physical sector
format. The DList becomes the new
GList. All sectors in the PList and GList
are reallocated.
Bits
5 4 3 2
0 0 0 0
0 0
Defect list length
Defect descriptor (s)
35
1 0
0 0
0 0