How do I know that the OS X 'Rebuild' function is working properly? It seems to be hanging. It shouldn't take 12 hours, should it?
The last two times I tried to rebuild OS X Mountain Lion the system seemed to hang at about the 1/3 mark on the progress bar. On both occasions I let the rebuild run overnight only to see the bar stuck where I left it. Is this an indication that I need to reinstall the OS?
Mac Pro (Early 2008), OS X Mountain Lion (10.8.2)