Fujitsu MHF2021AT, MHF2043AT, MHE2043AT, MHE2064AT manual Host Commands

5.3 Host Commands

∙

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Check sum

Two’s complement of the lower byte, obtained by adding 511-byte data one byte at a time from the beginning.

Insurance failure threshold

The limit of a varying attribute value. The host compares the attribute values with the thresholds to identify a failure.

(30) SECURITY DISABLE PASSWORD (F6h)

This command invalidates the user password already set and releases the lock function.

The host transfers the 512-byte data shown in Table 5.10 to the device. The device compares the user password or master password in the transferred data with the user password or master password already set, and releases the lock function if the passwords are the same.

Although this command invalidates the user password, the master password is retained. To recover the master password, issue the SECURITY SET PASSWORD command and reset the user password.

If the user password or master password transferred from the host does not match, the Aborted Command error is returned.

Issuing this command while in LOCKED MODE or FROZEN MODE returns the Aborted Command error.

(The section about the SECURITY FREEZE LOCK command describes LOCKED MODE and FROZEN MODE.)

C141-E057-01EN 5-63