Hitachi HTS541040G9AT00 Specifications - Page 166
Security Erase Unit F4h
UPC - 000059826569
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13.28 Security Erase Unit (F4h) Table 104: Security Erase Unit (F4h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count LBA Low LBA Mid LBA High Device 1 - 1 D - - - - Command 1 1 1 1 0 1 0 0 76 CRC UNC 00 Error Register 54 3 2 1 0 0 IDN 0 ABT T0N AMN 00 0 V 0 0 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count LBA Low LBA Mid LBA High Device Status see below Status Register 7 654 3 2 1 0 BSY RDY DF DSC DRQ COR IDX ERR 0 V0V - 0 - V The Security Erase Unit command initializes all user data sectors and then disables the device lock function. Note that the Security Erase Unit command initializes from LBA 0 to Native MAX LBA. The Host MAX LBA is set by the Initialize Drive Parameter or the Set MAX ADDRESS command is ignored. The protected area by the Set MAX ADDRESS command is also initialized. This command requests the transfer of a single sector of data from the host including information specified in the table below. If the password does not match, the device rejects the command with an Aborted error. Table 105: Erase Unit information Word Description 00 Control Word bit 0 : Identifier (1- Master, 0- User) bit 1-15 : Reserved 01-16 Password (32 bytes) 17-255 Reserved Identifier Zero indicates that the device should check the supplied password against the user password stored internally. One indicates that the device should check the given password against the master password stored internally. The Security Erase Unit command erases all user data and disables the security mode feature (device lock function). After completing of this command, all the user data will be initialized to zero with a write operation. At this time, the data write is not verified with a read operation to determine if the data sector is initialized correctly. At this time the defective sector information and the reassigned sector information for the device are not updated. The security erase prepare command should be completed immediately prior to the Security Erase Unit command. If the device receives a Security Erase Unit command without a prior Security Erase Prepare command, the device aborts the security erase unit command. Travelstar 5K100 Hard Disk Drive Specification 152