"Erase Free Space" stuck at Zero KB Hard Drive in CCleaner for Mac Posted November 15, 2012 I ran the Erase Free Space program and it filled up my hard drive and now it seems to be stuck on Zero KB remaining on the Hard Drive. It's been stuck on it for a couple hours now. Also, I can't open any of my documents. I need some help, badly. Please! Wait, it just popped up to 45 KB but it's taking forever. Should I just let it keep going?