IBM DTCA-24090 Hard Drive Specifications - Page 93

Read information data from protected area.

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3. Conventional usage without system software support Since the H D D works as 528MB device, there is no special care to use this device for normal use. 4. Advanced usage using protected area The data in the protected area is accessed by following. Issue Read Native Max LBA/CYL command to get the real device max LBA/CYL. Returned value shows that native device Max LBA is 0 F F F F F h regardless of the current setting. Make entire device be accessible including the protected area by setting device Max LBA as 0FFFFFh via Set Max LBA/CYL command with volatile option. By using this option, unexpected power removal or reset will not make the protected area remained accessible. Read information data from protected area. Issue hard reset or P O R to inhibit any access to the protected area. General Operation Descriptions 85

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3.
Conventional usage without system software support
Since the HDD works as 528MB device, there is no special care to use this device for normal use.
4. Advanced usage using protected area
The data in the protected area is accessed by following.
Issue Read Native Max LBA/CYL command to get the real device max
LBA/CYL. Returned value shows that native device Max LBA is 0FFFFFh
regardless of the
current setting.
Make
entire
device be
accessible
including
the
protected
area
by
setting
device Max
LBA
as
0FFFFFh via Set Max LBA/CYL command with volatile option. By using this option, unexpected
power removal or reset will not make the protected area remained accessible.
Read information data from protected area.
Issue hard reset or POR to inhibit any access to the protected area.
General Operation Descriptions
85