Pentax K-R Operating Manual page 27

You can delete a selected folder and all the images in it.
1 Turn the e-dial two clicks to the
left (toward 5€) in Playback
mode,
The folder display screen appears.
2
3
Use the four-way controller
(A • 4 I_) to select a folder to
delete and press the _.UP/'_
button.
The delete folder confirmation screen
appears.
Press the four-way controller (A)
to select [Delete].
4
Press the
OK
button.
The selected folder and all images in it are deleted.
The confirmation screen appears when
there are protected images. Use the four-
way controller ( • • ) to select [Delete All]
or [Leave All] and press the OK button.
When [Delete All] is selected, protected
images are also deleted.