Canon SC A60 - Manual (Page 120)

116
Resetting the File Numbers
You can select the way file numbers are assigned.
On
The file numbers are reset to the start (100-0001) each
time a new CF card is inserted. New images recorded on
CF cards with existing files are assigned the next
available number.
Off
The file number of the last image to be shot is
memorized so that images recorded to a new CF card
start from the next number.
1
In the [ (Set up)] menu, select (File
No. Reset).
See Selecting Menus and Settings (p. 43).
2
Select [On] or [Off] using the left or right
button.
3
Press the button.