Konica-minolta bizhub C450P Manuel d'utilisateur Page 66

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Administrator Operations
2
C450P 2-49
Administrator Operations Chapter 2
2.8 Overwrite All Function
When access to the Admin. Setting mode by the Administrator of the ma-
chine via the control panel is authenticated, the machine enables setting of
the operation of the Overwrite All function.
When the machine is to be discarded, or use of a leased machine is termi-
nated at the end of the leasing contract, the Overwrite All function overwrites
and erases all data stored in all spaces of the HDD. The function also resets
all passwords saved in the NVRAM to factory settings, preventing leak of da-
ta. For details of items that are cleared by the Overwrite All function, see
“Types of Data Cleared by Overwrite All Data Function” on page 1-12.
The HDD Overwrite Method offers the choice of eight different modes,
“Mode 1” through “Mode 8.” Overwrite All takes about less than one hour in
“Mode 1” at the minimum and about 9 hours in “Mode 8” at the maximum.
Mode Description
Mode 1 Overwrites once with 0x00.
Mode 2 Overwrites with random numbers random numbers 0x00.
Mode 3 Overwrites with 0x00 0xff random numbers verifies.
Mode 4 Overwrites with random numbers 0x00 0xff.
Mode 5 Overwrites with 0x00 0xff 0x00 0xff.
Mode 6 Overwrites with 0x00 0xff 0x00 0xff 0x00 0xff random
numbers.
Mode 7 Overwrites with 0x00 0xff 0x00 0xff 0x00 0xff 0xaa.
Mode 8 Overwrites with 0x00 0xff 0x00 0xff 0x00 0xff 0xaa ver-
ifies.
c450P_security_E.book 49 ページ 2007年4月10日 火曜日 午後6時49分
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