Fujitsu MBC2073RC Manual Do Utilizador

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CHAPTER 4  Command Specifications 
4.1 Control/Sense 
Commands 
4.2 
Data Access Commands 
4.3 Format 
Commands 
4.4 
Maintenance, Diagnostic Commands 
 
This chapter describes detailed specifications of the SCSI commands which the 
HDD is equipped with and how to use them. 
 
4.1 Control/Sense Commands 
4.1.1  TEST UNIT READY (00)  
 
 Bit 
Byte 
7 6 5 4 3 2 1 0 
0 X'00' 
1 0 0 0 0 0 0 0 0 
2 0 0 0 0 0 0 0 0 
3 0 0 0 0 0 0 0 0 
4 0 0 0 0 0 0 0 0 
5 0 0 0 0 0 0 0 0 
 
This command checks the status of the disk drive. 
If the HDD is in the ready state and it is possible for it to be used by the INIT 
(initiator) which issues this command, a GOOD status is reported for this 
command. 
If the HDD is not in the ready state, it reports a CHECK CONDITION status for 
this command.  The sense data generated at this time indicate the HDD's state at 
this time. 
C141-C013 
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