After successfully building an image, I decided to build one for another board.  Got a warning something like

[warn] low disk space [5GB]

 

I deleted the output directory and still states only 6 GB. I had given virtualbox 30 gb for this drive.

 

What is the proper way to clean out the drive after a compile? Just ignore it, does it over write?

Sorry if I missed this in the docs somewhere but I didn't find anything about it.

You can get some additional space back when clearing the rootfs and sources in cache directory. Also note that ccache is used to accelerate building further images. Check /root/.ccache

I ignored the warning and everything seemed to go fine. I've successfully compiled two images for boards I'm familiar with. Now on the the C4 ;]

 

Thanks again for your help!