Scratch Disk

You need to set up a scratch a scratch disk to centralize the work you do on final cut pro, it puts all your rendered files in one location. If you don't do this then, you can only access the work you do on that same computer. With your scratch disk, you can copy the files onto a usb then open it up on a different computer with final cut pro.

To set up a scratch disk, first of all you need to open up final cut pro.

Once Final Cut Pro has been opened, you click on final cut pro then open up system settings.

Click set and then create a new file for your files under Macintosh HD 2 then click Ok.