Canon EOS RP Instruction Manual page 525

Erasing All Images in a Folder or on a Card
You can erase all the images in a folder or on a card at once.
If the search conditions are set with [ 3 : Set image search conditions]
( = 345), the display will change to [All found images].
To erase all the images including protected images, format the card ( = 367).
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When [ 3 : Erase images] is set to [All
images in folder] or [All images on card],
all the images in the folder or on the card
will be erased.
If you select [All found images], all the
images filtered by the search conditions will
be erased.
Erasing Images
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