Canon PowerShot G15 User Manual page 224

Adjusting Basic Camera Functions
• The total card capacity indicated on the formatting screen may be less than
the advertised capacity.
Low-Level Formatting
Perform low-level formatting in these cases: [Memory card error] is
displayed, the camera is not working correctly, card image reading/writing is
slower, continuous shooting is slower, or movie recording suddenly stops.
Low-level formatting erases all data on a memory card. Before low-level
formatting, copy images on the memory card to a computer, or take other
steps to back them up.
• Low-level formatting takes longer than "Formatting Memory Cards"
(= 2 23), because data is erased from all storage regions of the memory
card.
•
You can cancel low-level formatting in progress by choosing [Stop]. In this
case, all data will be erased, but the memory card can be used normally.
224
Perform low-level formatting.
z z On the screen in step 2 on = 2 23,
press the <o><p> buttons or turn the
<7> dial to choose [Low Level Format],
and then select this option (mark with a
[ ]) by pressing the <q><r> buttons.
z z Follow steps 2 – 3 on = 2 23 to continue
with the formatting process.