Probably the wrong forum here for that question but there are multiple options. It really depends on what you have available or are willing to purchase. If you have a second (internal or external) hard drive just copy the data you want to that. You could also copy it to a thumb drive, sd, xd, flash or any other similar removable media if you have that. Another option is to burn the files to cd/dvd/blu-ray.
Thanks very much.