I have 500Gb RMBP. I always check how much free space do I have on my HD by right click/get info on Macintosh HD. Currently it shows 403GB available after installing some of my programs. And I'm fine with that. However, if I go to About this mac/more info/storage, then it shows I have only 265GB available. There is a 137GB of backups!!?? What are those backups? I have time machine on external HD for backup, why do I have another backup for 137GB which is actually way bigger than everything on my HD including OSX? IS there any way to free up this space? I'm really confused about this info, and would appreciate if anyone can comment on it.