Hitachi ic35l060avv207-0 Specifications - Page 106

Identify Device Data, 15.3 Exceptions in Address Offset Mode

Page 106 highlights

Before Enable Address Offset Mode A reserved area has been created using a nonvolatile Set Max command. Accessible (User Area) Non-Accessible (System reserved area) LBA 0 LBA R LBA M After Enable Address Offset Mode Accessible (System reserved area) Non-Accessible (User area) LBA 0 LBA M-R LBA M After Set Max Address Command using the Value Returned by Read Max Address Any commands which access sectors across the LBA M-R are aborted with error. Accessible (System reserved area) Accessible (User area) LBA 0 LBA M-R LBA M Figure 86. Device address map before and after Set Feature 9.15.2 Identify Device Data Identify Device data word 83 bit 7 indicates the device supports the Address Offset Feature. Identify Device data word 86 bit 7 indicates the device is in Address Offset mode. 9.15.3 Exceptions in Address Offset Mode Any commands which access sectors across the original native maximum LBA are rejected with error even if the access protection is removed by an Set Max Address command. The Read Look Ahead operation is not carried out even when enabled by Set Feature command. Deskstar 180GXP hard disk drive specifications 92

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Before Enable Address Offset Mode
A reserved area has been created using a nonvolatile Set Max command.
Non-Accessible
(System reserved
area)
Accessible
(User Area)
LBA 0
LBA R
LBA M
After Enable Address Offset Mode
Non-Accessible
(User area)
Accessible
(System reserved
area)
LBA 0
LBA M–R
LBA M
After Set Max Address Command using the Value Returned by Read Max Address
Any commands which access sectors across the LBA M–R are aborted with error.
Accessible
(User area)
Accessible
(System reserved
area)
LBA 0
LBA M–R
LBA M
Figure 86. Device address map before and after Set Feature
9.15.2 Identify Device Data
Identify Device data word 83 bit 7 indicates the device supports the Address Offset Feature.
Identify Device data word 86 bit 7 indicates the device is in Address Offset mode.
9.15.3 Exceptions in Address Offset Mode
Any commands which access sectors across the original native maximum LBA are rejected with error
even if the access protection is removed by an Set Max Address command.
The Read Look Ahead operation is not carried out even when enabled by Set Feature command.
Deskstar 180GXP hard disk drive specifications
92