Release Shutter Without Card  - Canon EOS 80D Instruction Manual

Installing and Removing the Card
The number of possible shots depends on the remaining capacity of the

card, image-recording quality, ISO speed, etc.
Setting [z1: Release shutter without card] to [Disable] will prevent

you from shooting without a card inserted (p.470).
Removing the Card
Access lamp
38
Open the cover.
1
Set the power switch to <2>.

Make sure the access lamp is off,

then open the cover.
If [Recording...] is displayed, close

the cover.
Remove the card.
2
Gently push in the card, then let go to

eject it.
Pull the card straight out, then close

the cover.