Canon PowerShot ELPH 150 IS IXUS 155 User Manual page 141

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Low-Level Formatting
Perform low-level formatting in the following 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"
(= 139), 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.
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z z
On the screen in step 2 of
"Formatting Memory Cards"
(= 139), press the <o><p>
buttons to choose [Low Level
Format], and then press the
<q><r> buttons to select this
option. A [
z z
Follow steps 2 – 3 in
"Formatting Memory Cards"
(= 139) to continue with the
formatting process.
] icon is displayed.
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