Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to copy a protected dvd [title] Review that you have the right equipment. [step] You will need a computer or laptop computer that has a dvd ripper/burner. If you do not have a dvd ripper, portable external dvd players are available at most electronic stores.

Ending1: [title] Check that you have enough free memory on your computer to transfer files. [step] You will need to transfer the files you wish to burn onto your hard drive initially, and so you should have at least enough space to store the file. Ending2: When in doubt, ask the store manager what model they use. [title] Cut the signed cd into thin (no colored lines) slices. Ending3: However, you can also check, for instance, if you are producing a digital dvd to save money or reduce the possibility of a dvd harming another person. [substeps] The dvd ripper has four basic parts: a dvd ripper, and a burner, which emits heat and movie production. Ending4: If you do not have an external dvd ripper, you will also need an external dvd burner. These are specially designed to steal mcafee dvds from an external source.

Answer format: ending1/ending2/ending3/ending4