Hitachi 7K400 Specifications - Page 202
Security Set Password F1h
UPC - 000053412935
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12.37 Security Set Password (F1h) Table 139: Security Set Password command (F1h) 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 0 0 1 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 Sector Number Cylinder Low Cylinder High Device/Head Status see below Status Register 7 654 3 2 1 0 BSY RDY DF DSC DRQ COR IDX ERR 0 V0- - 0 - V The Security Set Password command enables the security mode feature (device lock function) and sets the master password or the user password. The security mode feature (device lock function) is enabled by this command and the device is not locked immediately. The device is locked after the next power on reset or hard reset. When the MASTER password is set by this command, the master password is registered internally. The device is NOT locked after next power on reset or hard reset. This command requests the transfer of a single sector of data from the host including the information specified in the table below. The data transferred controls the function of this command. Table 140: Security Set Password Information Word 00 01-16 17 18-255 Description Control Word bit 0 : Identifier (1-Master, 0-User) bit 1-7 : Reserved bit 8 : Security level (1-Maximum, 0-High) bit 9-15 : Reserved Password (32 bytes) Master Password Revision Code (valid if Word 0 bit 0 = 1) 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. Deskstar 7K400 Hard Disk Drive Specification 188