By disk do you mean another hard drive or a CD/DVD disc?
IF the latter, get a copy of CDBurnerXP. IF the former, select My Pictures folder, or wherever they are, right click copy and then go to the destination and right click paste.
Later look into a program like SyncToy2 from microsoft or Syncback free version and learn how to set up profiles to copy the photo location to the backup location on a regular schedule, using a dummy test backup folder initially until you get it down pat.
A forum community dedicated to tech experts and enthusiasts. Come join the discussion about articles, computer security, Mac, Microsoft, Linux, hardware, networking, gaming, reviews, accessories, and more!