Hitachi 7K250 Specifications - Page 132
Format Unit F7h
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UPC - 000004558972
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12.7 Format Unit (F7h) Table 60: Format Unit command (F7h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature 0 0 0 1 0 0 0 1 Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 L 1 D - - - - Command 1 1 1 1 0 1 1 1 76 CRC UNC 0V Error Register 54 3 2 1 0 0 IDN 0 ABT T0N AMN 0V 0 V 0 V 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 VVV 0 0 - V The Format Unit command initializes all user data sectors after merging the reassigned sector location into the defect information of the device and clearing the reassign information. Both new reassign information and new defect information are available immediately after the completion of this command and are also used on the next power-on reset or hard reset. This command erases both previous information data from the device. Note that the Format Unit command initializes from LBA 0 to Native MAX LBA regardless of the setting by the Initialize Device Parameter (91h) command or the Set Max Address (F9h) command, so that the protected area defined by these commands is also initialized. The Security Erase Prepare (F3h) command should be completed immediately prior to the Format Unit command. If the device receives a Format Unit command without a prior Security Erase Prepare command, the device aborts the Format Unit command. All values in Feature register are reserved and any values other than 11h should not be put into Feature register. This command does not request a data transfer. Command execution time depends on drive capacity. To determine the command time-out value, refer to Word 89 of Identify Device data. Deskstar 7K250 Hard Disk Drive Specification 118
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