Ricoh PRO C900 Operating Instructions Manual page 87

Clear
• If the Data Overwrite icon is not displayed, first check if Auto Erase Memory has been set to [Off]. If
the icon is not displayed even though Auto Erase Memory is [On], contact your service representative.
Methods of Overwriting
You can select a method of overwriting from the following:
[NSA] *1
Temporary data is overwritten twice with random numbers and once with zeros.
[DoD] *2
Temporary data is overwritten with a fixed value, the fixed value's complement, and random numbers.
It is then verified.
[Random Numbers]
Temporary data is overwritten multiple times with random numbers. The number of overwrites can be
selected from 1 to 9. The default is 3 times.
*1 National Security Agency, U.S.A.
*2 Department of Defense, U.S.A.
• Default: Random Numbers
Using Auto Erase Memory
This can be specified by the machine administrator.
For details about logging on and logging off with administrator authentication, see "Logging on Using
Administrator Authentication", "Logging off Using Administrator Authentication".
• When Auto Erase Memory is set to [On], temporary data that remained on the hard disk when Auto
Erase Memory was [Off] might not be overwritten.
1. Press the [User Tools/Counter] key.
2. Press [System Settings].
3. Press [Administrator Tools].
4. Press [ Next] repeatedly until [Auto Erase Memory Setting] appears.
This icon is lit when there is no temporary data to be overwritten.
Deleting Data on the Hard Disk
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