Final Cut Pro's preferences include a setting that lets you set the minimum space you want to keep available on a scratch disk. If you have limited scratch disk space, you may want to set this to the amount of disk space you want available for render files. If you use most of your disk space for captured clips, you may run out of space when rendering transitions, and clips with filters or motion parameters applied to them.
If you're working with HDV, it's important to note that this setting is not respected with HDV captures. If you wish to reserve a certain amount of free space on your scratch disk when capturing HDV, you'll need to monitor disk usage yourself.
To determine how much free space is available on a hard drive, follow these steps:
This document will be updated as more information becomes available.