Canon PowerShot A3100 IS Getting Started page 87

Low Level Memory Card Formatting
Perform low level formatting when you think that the recording/reading
speed of a memory card has dropped.
Performing a low-level format on a memory card erases all data on the
memory card. As you cannot retrieve the erased data, exercise adequate
caution before performing a low-level format.
1 Display the menu.
●
Press the n button.
2 Choose [Format].
●
Press the qr buttons to choose the 3 tab.
●
Press the op buttons to choose [Format],
then press the m button.
3 Perform the low level format.
●
Press the op buttons to choose [Low
Level Format], then press the qr buttons to
display .
●
Press the opqr buttons to choose [OK],
then press the m button.
X
A confirmation screen will appear.
●
Press the op buttons to choose [OK], then
press the m button.
X
Low level formatting starts.
51