IBM IC25N020ATDA04 Hard Drive Specifications - Page 168
Security Erase Unit F4h
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13.23 Security Erase Unit (F4h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 - 1 D - - - - Command 1 1 1 1 0 1 0 0 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count Sector Number Cylinder Low Cylinder High Device/Head Status see below Error Register 76543210 CRC UNC 0 IDN 0 ABT T0N AMN 000V0V00 Status Register 7 6 5 4 3 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0 V 0 V - 0 -V Figure 103. Security Erase Unit command (F4h) 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 Figure 104. If the password does not match, the device rejects the command with an Aborted error. Word 00 01-16 17-255 Description Control Word bit 0 : Identifier (1- Master, 0- User) bit 1-15 : Reserved Password ( 32 bytes ) Reserved Figure 104. Erase Unit information Travelstar 48GH, 30GN & 15GN hard disk drive specifications 154