Deskstar 7K500 and Deskstar E7K500 Hard Disk Drive Specification
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12.8 Format Track (50h)
Table 86: Format Track command (50h)
The Format Track command formats a single logical track on the device. Each good sector of data on the track will
be initialized to zero with the write operation. At this time, the read operation does not verify the correct initializa-
tion of the data sector. Any data previously stored on the track will be lost.
The host may transfer a sector of data containing a format table to the device. But the device ignores the format
table and writes zero to all sectors on the track regardless of the descriptors.
Since device performance is optimal at 1:1 interleave and the device uses relative block addressing internally, the
device will always format a track in the same way no matter what sector numbering is specified in the format table.
Output parameters to the device
Sector Number In LBA mode this register specifies that LBA address bits 0–7 are to be formatted. (L=1).
Cylinder High/Low This indicates the cylinder number of the track to be formatted. (L = 0)
In LBA mode this register specifies that LBA address bits 8–15 (Low) and bits 16–23
(High) are to be formatted. (L = 1)
H This indicates the head number of the track to be formatted (L = 0). In LBA mode this reg-
ister specifies that LBA address bits 24–27 are to be formatted. (L= 1)
Input parameters from the device
Sector Number In LBA mode this register specifies the current LBA address bits as 0–7 (L = 1).
Cylinder High/Low In LBA mode this register specifies the current LBA address bits as 8–15 (Low) and bits
16–23 (High).
H In LBA mode this register specifies the current LBA address bits as 24–27 (L=1).
Error The Error Register. An Abort error (ABT=1) will be returned when LBA is out of range
In LBA mode this command formats a single logical track including the specified BLA.
Command Block Output Registers Command Block Input Registers
Register 7 6 5 4 3 2 1 0 Register 7 6 5 4 3 2 1 0
Data - - - - - - - - Data - - - - - - - -
Feature - - - - - - - Error see below
Sector Count - - - - - - - - Sector Count - - - - - - - -
Sector Number V V V V V V V V Sector Number V V V V V V V V
Cylinder Low V V V V V V V V Cylinder Low V V V V V V V V
Cylinder High V V V V V V V V Cylinder High V V V V V V V V
Device/Head 1 L 1 D H H H H Device/Head - - - - H H H H
Command 0 1 0 1 0 0 0 0 Status see below
Error Register Status Register
7654321 0 76543 21 0
CRC UNC 0 IDN 0 ABT T0N AMN BSY RDY DF DSC DRQ COR IDX ERR
000V0V0 0 0V0V- 0- V
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