Canon S820D User Manual page 76

Change the drive's read/write attribute.
When you select this item, the Drive Settings dialog box is displayed. You can
change the mode (read-only mode, and read/write enabled mode) of the card
slot by following the instructions displayed on the screen. Be sure to eject the
memory card before you change the mode.
Auto-start an application when a card is inserted./Do nothing when a card
is inserted.
Select whether an application is to be started automatically when the memory
card is inserted.
Note
The application to be started can be set in advance with the Auto-start an
application when function.
Do not display this dialogue when a card is inserted.
When this checkbox is selected, this screen is not displayed even when a
memory card is inserted. Specified application starts according to the Auto-
start an application when a card is inserted./Do nothing when a card is
inserted. setting.
Quit
This item terminates the Memory Card Utility.
Setting the Application to Be Started
Using the Memory Card Utility (Macintosh)
Starting the Memory Card Utility 76