Konica Minolta bizhub 751 User Manual
Page 17
Appendix A Overwrite All Data Function
(HDD Sanitization)
At the ‘End of Life’ or ‘End of Lease’ where the MFP is to be discarded the Overwrite All Data function
overwrites and erases all data stored in all spaces of the HDD. This function also resets all passwords
back to factory default settings, preventing any leakage of data.
The HDD Overwrite Methods include the choice of eight different modes, [Mode 1] through [Mode 8] each
Mode corresponding with a specific Government Standard.
Overwrite All Data takes less than one hour in [Mode 1] at the minimum and approximately 9 hours in
[Mode 8] at the maximum.
Mode
Description
Mode 1
Overwrites once with 0x00.
Japan Electronic & Information Technology Association Russian Standard (GOST)
Mode 2
Overwrites with random numbers
Current
National
Security
Agency
(NSA)
random
numbers
0x00.
Mode 3
Overwrites with 0x00
0xff
National
Computer
Security
Center
(NCSC-TG-025)
random
numbers US
Navy
(NAVSO
P-5239-26)
verifies.
Department
of
Defense
(DoD
5220.22M)
Mode
4
Overwrites
with
random
numbers Army
Regulations
(AR380-19)
0x00
0xff.
Mode
5
Overwrites
with
0x00
Former
NSA
Standard
0xff
0x00
0xff.
Mode
6
Overwrites
with
0x00 NATO
Standard
0xff
0x00
0xff
0x00
0xff
random
numbers.
Mode
7
Overwrites
with
0x00
German
Standard
(VISTR)
0xff
0x00
0xff
0x00
0xff
0xaa.
Mode
8
Overwrites
with
0x00
US
Air
Force
(AFSSI5020)
0xff
0x00
0xff
0x00
0xff
0xaa
verifies.