Sony DVS-9000 User Manual page 297

Reloading a USB driver
To reload a USB driver, in the System >Maintenance menu, press [Reload
USB Driver].
Note
If even after this operation the memory card is not recognized, remove the
memory card and reinsert it, then try again.
Initializing the hard disk
If a file system corruption error has occurred on the hard disk, you should
initialize the hard disk.
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Locking the setup menu settings
To protect the data, you can inhibit operations in selected setup menus. Use the
following procedure. (It is not possible to lock the Setup Operation Lock
menu.)
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Setup for the Whole System
In the <HDD> group of the System >Maintenance menu, press [HDD
Format].
Note
When the hard disk is operating normally, pressing [HDD Format] has no
effect.
An initialization confirmation message appears.
To execute the initialization operation, press [Yes]. To cancel, press [No].
If you have pressed [Yes], the hard disk initialization operation is
executed, and a finished message appears. If you have pressed [No], the
initialization operation is canceled, and the System >Maintenance menu
appears again.
Press [OK].
The processor is reset.
In the System >Maintenance menu, press [Setup Operation Lock].
The Setup Operation Lock menu appears.
In the <VF Group> group, select the group including the desired menu.