Hello, I'm fairly new to Mac - I just filled up my macbook pro. I have multiple external HDs and am in the process of making room on my HD. When I do "get info" in finder window on the main HD, it says I have 148.xx Gigs - so I figure my HD was originally 150gigs or maybe it was 160 gigs. I have an intel core 2 duo macbook pro. So I've gone though various things. 6 gigs in applications 26 gigs parallels 18 gigs music 4 gigs work documents ppts, etc 50 gigs videos 12 gigs books/videos, misc work resources that totals 116 gigs. What happened to the other 30 gigs? Does anyone have any tips on where I can look to figure out if I have files hidden away somewhere? How much space does OS X tiger take up? my applications said 6 gigs, is this about right? or are there other files somewhere that I'm missing? Any tips in general would be appreciated. I tried searching for things like HD and hard drive and making room and full hd and all I found where a million threads on the iphone. Thanks for your help, found some more: Library folder from main HD - 10 gigs system folder about 2 gigs Still missing 20ish gigs ... ? 5 gigs available still missing 15 ish gigs?