Deskstar T7K250 Hard Disk Drive Specification
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12.32 Security Disable Password (F3h)
Table 108: Security Disable Password (F3h)
The Security Erase Prepare command must be issued immediately before the Security Erase Unit command to
enable device erasing and unlocking.
The Security Erase Prepare Command must be issued immediately before the Format Unit Command. This com-
mand is to prevent accidental erasure of the device.
This command does not request the transfer of data.
Command Block Output Registers Command Block Input Registers
Register 7 6 5 4 3 2 1 0 Register 7 6 5 4 3 2 1 0
Data - - - - - - - - Data - - - - - - - -
Feature - - - - - - - - Error see below
Sector Count - - - - - - - - Sector Count - - - - - - - -
Sector Number - - - - - - - - Sector Number - - - - - - - -
Cylinder Low - - - - - - - - Cylinder Low - - - - - - - -
Cylinder High - - - - - - - - Cylinder High - - - - - - - -
Device/Head 1 - 1 D - - - - Device/Head - - - - - - - -
Command 1 1 1 1 0 0 1 1 Status see below
Error Register Status Register
7654321 0 7654 3 21 0
CRC UNC 0 IDN 0 ABT T0N AMN BSY RDY DF DSC DRQ COR IDX ERR
00000V0 0 0V0V - 0- V
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