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New Macbook Pro, 30GB of space used - what is using it?

I just turned on my new 256GB Retina Macbook Pro for the first time and noticed 30GB of space is used! That seems like a lot. Does anyone know what is using it - surely the OS doesn't use that much?


Thanks!

MacBook Pro with Retina display, OS X Mountain Lion (10.8.2)

Posted on Nov 7, 2012 2:49 PM

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12 replies

Nov 7, 2012 3:01 PM in response to stedman1

I understand this (I'm not a basic user, but I'm newish to OS X).


However what I don't understand is how a fresh install takes up so much space. Even after I removed iMovie, Garage Band, used Monolingual to delete languages, etc, it still uses 25GB of space.


Basically what I'm asking is if anyone knows of anything else that can be deleted.


Thanks again

Nov 7, 2012 3:15 PM in response to UnitedWeFall

A fresh Mountain Lion install, without any of the iLife apps or anything else, should be about 15 GB. (Of course, that's on a mid-2010 MacBook Pro... it's possible that number will be slightly different on a new retina MBP.) With iLife, it will, of course, take up more space.


You need to stop removing things from the system, especially using tools like Monolingual to chop bits out. That can cause certain applications to fail to be updated in the future or to stop working entirely. You could reinstall ML fresh, without iLife apps, to reduce the size a bit.


However, if you're finding 256 GB so tight that 30 GB is too much, you should probably return it and get one with a larger drive.

Nov 7, 2012 4:45 PM in response to Kappy

A fresh install of Mountain Lion, Tom, is more like 25 GBs once you start up the first time.


Actually, I just did this earlier today, and what I got was 15 GB. (Okay, actually closer to 16 GB now that I check it.)


User uploaded file


I installed it from my 10.8 installer, which I saved from when I upgraded, and then updated it to 10.8.2. I didn't install any iLife apps on it. How did you do your install?

Nov 7, 2012 7:38 PM in response to thomas_r.

I did it with the installer application. The installed system was put on an internal hard drive. It initially occupied about 9 GBs according to Get Info. I didn't think that was right expecting a larger number less than 15 GBs because you could generally fit OS X onto a 16 GB flash drive with room to spare. So, I booted it to be sure it was OK. I then returned to my regular system and did another Get Info. It was now up to 25 GBs.


So, I cloned it to another drive. 9 GBs until after I booted it. Popped up to 25 GBs. I had to put the darn thing on a 32 GB flash drive.


So, I'm puzzled as to why we got two such different results.

New Macbook Pro, 30GB of space used - what is using it?

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