Konica Minolta bizhub 420 - Manual (Page 18)

Setting the Overwrite All Data
<Setting can be made only from the control panel>
1
Enter the Administrator Mode on the MFP display, Utility/Counter button > Administrator Settings > Input
Admin Password > Security Setting > HDD Settings
2
Touch [Overwrite All Data].
3
Select the desired mode and touch [Overwrite].
4
A message appears that prompts you to confirm whether you want to overwrite all data. Touch [Yes].
5
Make sure that a message appears prompting you to turn OFF and then ON the main power switch. Now,
turn OFF and then turn ON the main power switch.