User manual

Cypher Technology Ltd 2008
11
Press the {Menu} soft key to enter the Menu system. The Up/down arrow keys are used
to select the desired function. Wipe Card is number 5 in the list of possible functions. If it
not already displayed, press [Up Arrow] or [Down Arrow] until “Wipe Card” is shown in
the display. Press the {Go} soft key to execute the function. This function writes “0”s to
the card. After the card is wiped, it is formatted as FAT32 and is ready for use. Pressing
the {Exit} soft key to returns to the top level.
4.10 Calculate the Checksum of the Flash Card
This function will generate a unique number from the contents of the Flash card. This is
called a checksum (see below). This number provides a useful and secure identification
for the card and the Master Copy. The checksum of the card will be the same as the
checksum of the Master image file for that card.
Press the {Menu} soft key to enter the Menu system. The Up/down arrow keys are used
to select the desired function. Checksum Card is number 6 in the list of possible
functions. If it not already displayed, press [Up Arrow] or [Down Arrow] until “Checksum
Card” is shown in the display. Press the {Go} soft key to execute the function. When the
process is complete, the checksum is displayed.
Pressing the {Exit} soft key to returns to the top level.
4.11 Format Flash card
This function first overwrites the Master Boot Record of the card with binary “0”s thereby
removing any boot sector viruses. It then re-partitions the card with a single primary
partition of the maximum size and then formats this with a FAT32 file system. Note this
function does not wipe the data area of the card. The Wipe card function must be used
if this is required. See Section 4.9.
Press the {Menu} soft key to enter the Menu system. The Up/down arrow keys are used
to select the desired function. Checksum Master is number 7 in the list of possible
functions. If it not already displayed, press [Up Arrow] or [Down Arrow] until “Format
Card” is shown in the display. Press the {Go} soft key to execute the function. When
complete “Formatted” is displayed.
Pressing the {Exit} soft key to returns to the top level.
4.12 Calculate the Checksum of the Master Disk Image
This function will generate a unique number from the contents of the Master Copy disk.
This is called a checksum (see below). This number provides a useful and secure
identification for the Master Copy and the Flash card.
Press the {Menu} soft key to enter the Menu system. The Up/down arrow keys are used
to select the desired function. Checksum Master is number 8 in the list of possible
functions. If it not already displayed, press [Up Arrow] or [Down Arrow] until “Checksum
Master” is shown in the display. Press the {Go} soft key to execute the function. When
complete the checksum is displayed.
Pressing the {Exit} soft key to returns to the top level.