Hitachi Ultrastar 15K73 Reference Manual page 122

3.5 inch magnetic disk drive scsi interface specification
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OEM MANUAL:K6602924
Precautions to be observe on the host computer side
It is recommended that the host computer issue a MODE SENSE command
requesting the controller to return all changeable values prior to issuing any
MODE SELECT commands, in order to find out the pages supported by the
controller, page lengths, and changeable fields or bits.
It is recommended that the host computer issues the RESERVE UNIT command
prior to executing the MODE SELECT command which intends to change the page
3
(Format parameter) and/or page 4
(Geometry parameter), and issues the
H
H
RELEASE UNIT command after the completion of the FORMAT UNIT command.
This procedure will prevent another host computer from issuing different Mode
Select parameters to the same unit prior to the execution of the FORMAT UNIT
command.
MODE SELECT:(15h)
5 COMMAND DESCRIPTIONS
Revision: 1 / Date: 2003.03.06
Page: 122 / 273

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