Hard Disc Backup

Time Machine is an automated process. Just plug in your new, external hard drive and when the Mac offers to use it for Time Machine, just click yes. Everything from then on is done automaCalendarly. The following instructions apply to making an alternative (or preferably an additional) backup to Time Machine.

A backup can be just a copy of all the files you've created or it can include all the files on your hard disc which is known as a clone. The advantage of making a clone on an external drive is that if your normal hard drive fails, you can start your Mac from the external clone.

Note that you cannot make a clone just by dragging all the files across from your hard disc to the external disc. You need software to do this for you.

Alternative procedures

Partitions

Your external drive can be split into partitions which act as if they were separate drives