Move to trash missing

[zenfly2]

I've been flying my Spark for 4mos and the MA about 1mos. When I want to delete a video I would right click and in the options there would be a choice "move to trash".. Well today it's gone from the choices and I can't figure another way to delete. Can someone tell me what happened or what I did..When I drag it to trash i get "The item “DJI_0141.MOV” can’t be moved to the Trash because it can’t be deleted." ...Thanks for looking

 

[zenfly2]

Thank you SoccerRef12 on the Spark forum told me there is a lock switch on the side of the SD card adapter that got switched that I didn't even know was there.