I am working on a project and it needs 100 GIG of space. I tried copying it to my Retina Macbook Pro and was told I did not have enough free space. I took a look and it says I have 84 gig free. I went into my Movies Directory and removed all my old iMovie files. That directory itself was close to 100 GB in size. After I did that I emptied the trash. However if I try copying the 100 gig directory I need to use I am told I do not have enough space. If I click on my hard drive and select info it tells me I have 84 gig free. I ran the Drive Utility and it didn't find anything. So how do I get the mac to realize it had this new free space? Is there a way to reindex or rescan the drive?