Hitachi HDT725025VLA380 Specifications - Page 215
Security Disable Password F6h
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12.30 Security Disable Password (F6h) Table 119: Security Disable Password (F6h) 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 1 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 76 CRC UNC 00 Error Register 54 3 2 1 0 0 IDN 0 ABT T0N AMN 00 0 V 0 0 Status Register 7 654 3 2 1 0 BSY RDY DF DSC DRQ COR IDX ERR 0 V0V - 0 - V The Security Disable Password command disables the security mode feature (device lock function). The Security Disable Password command requests a transfer of a single sector of data from the host including information specified in the table below. The device then checks the transferred password. If the User Password or Master Password matches the given password, the device disables the security mode feature (device lock function). This command does not change the Master Password which may be reactivated later by setting User Password. This command should be executed in device unlock mode. Table 120: Password Information for Security Disable Password command Word 00 01-16 17- 255 Description Control word bit 0 : Identifier (1-Master, 0- User) bits 1-15 : Reserved Password Reserved (32 bytes) The device will compare the password sent from this host with that specified in the control word. 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 T7K500 Hard Disk Drive Specification 201