Canon IXUS 1100 HS - Manual (Page 127)

Erasing Images
127
Choose [All Images].
z Follow Step 2 on p. 125 to touch [All
Images].
Protect images.
z Touch [Protect].
You can choose images and then erase them in groups. Since erased images
cannot be recovered, exercise adequate caution before erasing. Protected
images (p. 125) cannot be erased.
Choose [Erase].
z Touch H, then n to choose the
1 tab, and touch [Erase].
Choose a selection method.
z Touch a selection method.
z Touch ^ to return to the menu screen.
Choosing All Images
You can unlock groups of protected images if you choose [Unlock] in
Step 2.
Erasing Images
Choosing a Selection Method