This question already has an answer here:
Whenever I try the command
sudo apt-get install -f I get the message
Media change: please insert the disc labeled 'Ubuntu 15.10 _ Wily Werewolf_ - release amd 64 (20151021)' in the drive '/media/cdrom/' and press enter.
Now, my question is can I use a USB instead of a DVD in this case? Because I've got the .iso named above already on a boot USB.