Hitachi IC25N040ATCS04-0 Specifications - Page 133

13.7 Format Unit (F7h: vendor specific) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature V V V V V V V V Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 - 1 D - - - - Command 1 1 1 1 0 1 1 1 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 7 6 5 4 3 210 CRC UNC 0 IDN 0 ABT T0N AMN 0 0 0 V 0 V00 Status Register 7 6 5 4 3 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0 V 0 V - 0 -V Figure 84. Format Unit command (F7h) 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 right after the completion of this command. They 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. Host MAX LBA is set by Initialize Drive Parameter or Set MAX ADDRESS command is ignored. The protected area by Set MAX ADDRESS command is also initialized. The Security Erase Prepare 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. If the Feature register is NOT 11h, the device returns an Abort error to the host. This command does not request a data transfer. Output parameters to the device Feature This indicates the Destination code for this command. 11H The merge reassigned location into the defect information. Hitachi Travelstar 60GH & 40GN hard disk drive specifications 120