Canon PowerShot SD1400IS User Manual page 51

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.
Display the menu.
:: P re s s th e M E N U b utto n.
,,,\ .......
ii"_ _i iil
2 Choose [Format].
....... " Press the _ buttons to choose the _1'
tab.
,, Press the Av buttons to choose
then press the @ button.
[Format],
J Perform the low level format.
Press the Av buttons to choose [Low
Level Format], then press the 4)' buttons
to display ',4 / .
Press the Av4_, buttons to choose
then press the @ button. [OK],
A confirmation screen will appear.
Press the A'v" buttons to choose [OK],
then press the @ button.
The memory card will be formatted.
When low level formatting ends, [Memory
card formatting complete] will appear.
Press the @ button.
If the [Memory card error] message appears, or if the camera does not work
correctly, performing a low level format may solve the problem. Copy the images
from the memory card to a computer or other device before performing a low
level format.
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