Canon EOS 7D - Manual (Page 187)

187
You can either select and erase images one by one or erase them in
one batch. Protected images (p.186) will not be erased.
Once an image is erased, it cannot be recovered. Make sure
you no longer need the image before erasing it. To prevent
important images from being erased accidentally, protect it.
Erasing a RAW+JPEG image will erase both the RAW and
JPEG images.
1
Playback the image to be erased.
2
Press the <L> button.
X The erase menu will appear at the
bottom of the screen.
3
Erase the image.
Turn the <5> dial to select [Erase],
then press <0>. The image
displayed will be erased.
By checkmarking the images to be erased, you can erase multiple
images at one time.
1
Select [Erase images].
Under the [3] tab, select [Erase
images], then press <0>.
L Erasing Images
Erasing a Single Image
3 Checkmarking <X> Images to be Erased in a Batch