From [http://support.apple.com/kb/TA27694?viewlocale=en_US] and own experiences, my own advice to myself is as follows. Note however:
- It is not guaranteed to be correct or complete! Just my own best-practice, so far.
- It will only delete from scratch areas it actually knows about i.e. as defined in FCP’s System Settings.
- Even then, it doesn’t seem to delete everything. After allegedly deleting all render files of all projects, I went through afterwards and found (and deleted) a number of files under [Render Files/Constant Frames]. Maybe a result of my messy initial novice practices – who knows!
My process:
- Open the project in Final Cut Pro
- Delete Project’s Render-Files:
- Tools > Render Manager.
- Use checkbox in the Remove column next to the name of the project whose render-files you wish to remove.
- Warning: Do not check other projects or those projects’ render files will also be removed.
- Click OK.
- Delete Media Files in the Browser:
- Activate the Browser window.
- Select everything you want to delete (e.g. Select All).
- Warning: Don’t select any clips, images, audio or anything else that is used in another project, or is used by another application (a photo that you are also using in a DVD project, for example), , as you will not want them to be deleted.
- Modify > Make Offline.
- Click the Move Them to the Trash button.
- Click OK.
- Close your Final Cut Pro project (and don’t bother saving!)
- Delete the Project File
- Drag it to the Trash after you have quit Final Cut Pro.
- But how do I know where it is located, e.g. if it was the latest project, auto-loaded into FCP, I might not remember where it is.
- Save Project As reveals the project file name e.g. [LenWed RecepLine Expt 001 copy.fcp]. Expanding the Save..As Finder reveals it is in a directory called [FCP Projects]. But not obvious where that folder is located.
- But how do I know where it is located, e.g. if it was the latest project, auto-loaded into FCP, I might not remember where it is.
- There may also be project files in the AutoSave Vault(s).
- In my case, this vault is on the System drive, because I save my main project files to real-world-project -specific folders on a separate Media drive (a local RAID).
- Drag it to the Trash after you have quit Final Cut Pro.
- Check any scratch areas etc. on other disks, e.g. System disk, in case anything got (accidentally) written there, e.g. if system was accidentally powered-up when RAID was not running.
- Empty the Trash