Hitachi ULTRASTAR 15K450 HUS154530VLF400 - Manual (Page 287)

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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19.44 SYNCHRONIZE CACHE (16) - (91)
Table 232: Synchronize Cache (16) - (91)
The SYNCHRONIZE CACHE command ensures that logical blocks in the cache have their most recent data value recorded
on the media. See the SYNCHRONIZE CACHE (10) description for definitions of the fields in this command.
Byte
BIT
7 6 5 4 3 2 1 0
0 Command Code = 91h
1 Reserved = 0
Immed
= 0
Rsvd=
0
2-9 Logical Block Address
10-13 Number of Blocks
14 Reserved = 0
15 VU = 0 Reserved = 0 FLAG LINK