Help all my system drive gets eaten up

Question

I was using final cut pro to render some files and using compressor to build me a mpeg stream and I came back and it had paused most of it said there was 0kb in my system drive that once had 30GB in there left
On final cut pro my render manager are set to different drives for sure, I do use HD files and import to sxs but that says hard drive 3 and final cut says hard drive 2 and 3 so what it using my system drive
please help
Daz

Answer 1

Go to your application folder click on FCP and get info. How big is is the FCP application?
A few months ago I notice that my FCP application was over 1.5 gig in size, it should be around 413 MB. Somehow, some of my render files were being written to the FCP application. To fix this I right clicked on the FCP application and open the Show Package Content. In the MacOS folder there are two folder called Render Files and Audio Render Files. There was over 1 gig of old render files in both of those folders... Deleted the content of the folders and had no problems since. I didn't delete the folders themselves.
I did check my backup copy of my OS/Final Cut Pro before deleting anything. I wanted to make sure that the package content of FCP has those folders to begin with, sure enough it does. Why it wrote to those folders I have no idea. Must be a FCP thing for one reason or another.