HP 220mx Betriebsanweisung Seite 117

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SCSI-2 Drive Command Set
Read Capacity Command (25H)
Chapter 22-80
Read Capacity Command (25H)
This command reads the capacity of the optical disk surface in the drive.
The last logical block address and block length of the medium are
returned.
PMI A Partial Medium Indicator bit of 1 indicates that the
logical block address field does not need to be set to 0.
A PMI bit of 0 indicates that the logical block address
field must be set to 0.
Table 2-73 Read Capacity Command CDB
Byte 7 6 5 4 3 2 1 0
0 Operation Code (25H)
1 Logical Unit Number
(0)
Reserved (0) RelAdr
2 Logical Block Address (MSByte)
3 Logical Block Address
4 Logical Block Address
5 Logical Block Address (LSByte)
6 Reserved (0)
7 Reserved (0)
8 Reserved (0) PMI
9 Reserved (0) Flag Link
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