Western Digital's come up with a fancy new way to format hard drives—changing sector sizes to 4KB that use a pooled Sync/DAM header and ECC blocks—that promises to give back 7 to 11 percent of hard drive space.
If that description doesn't make sense, here's what the structure looks like. The catch is that if you wanna use this new hard drive format, it requires you performing a clean install of your OS. Other drive manufacturers are looking at this up, so everybody might get to benefit from Advanced Formatting and the extra space. Hoo-ray. [WD, WD (PDF) via PC Perspective via Electronista, Image via Wikipedia]