Canon EOS 60D Instruction Manual page 216

L Erasing Images
3 Erasing All Images in a Folder or Card
You can erase all the images in a folder or card at once. When the [3
Erase images] menu option is set to [All images in folder] or [All
images on card], all the images in the folder or card will be erased.
To also erase protected images, format the card (p.48).
216
Select [Select and erase images].
2
Select [Select and erase images],
then press <0>.
The images will be displayed.
To display the three-image display,
press the <I> button. To return
to the single-image display, press the
<u> button.
Select the images to be erased.
3
Turn the <5> dial to select the
image to be erased, then press the
<V> key.
A <X> checkmark will be displayed
on the upper left.
To select other images to be erased,
repeat step 3.
Erase the images.
4
Press the <L> button.
Select [OK], then press <0>.
The selected images will be erased.