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11.8.41 SECURITY DISABLE PASSWORD (F6h)
COMMAND CODE
1 1 1 1 0 1 1 0
REGISTER
REGISTER SETTING NORMAL COMPLETION
DR DRIVE No. no change
CY no change
HD no change
SN no change
SC no change
FT no change
This command can be executed only when the drive is in unlocked mode. When the drive is in locked mode,
the drive rejects the command with an Aborted command error.
The SECURITY DISABLE PASSWORD command requests a transfer of a single sector of data from the host
including the information specified in the following table. Then the drive checks the transferred password. If
the user password or the Master password match the given password, the drive disables the lock function.
This command does not change the Master password which may be reactivated later by setting a user
password.
Security Disable Information
Word Content
0 Control word
Bit 15-1 Reserved
Bit 0 Identifier 0=compare user password
1=compare master password
1-16 Password (32 bytes)
17-255 Reserved
11.8.42 SMART Function Set (B0h)
This command has a number of separate functions which can be selected via the Feature Register when the
command is issued. The subcommands and their respective codes are listed below.
Subcommand Code
SMART READ ATTRIBUTE VALUES D0h
SMART READ ATTRIBUTE THRESHOLDS D1h
SMART ENABLE/DISABLE AUTOSAVE D2h
SMART SAVE ATTRIBUTE VALUES D3h
SMART EXECUTE OFF-LINE IMMIDIATE D4h
SMART READ LOG SECTOR D5h
SMART WRITE LOG SECTOR D6h
SMART ENABLE OPERATIONS D8h
SMART DISABLE OPERATIONS D9h
SMART RETURN STATUS DAh
SMART ENABLE/DISABLE AUTOMATIC OFF-LINE DBh