Mountain Lion takes 42 GB

[elracador]

Hi,

I have made a Mountain Lion install on a formatted disk.
Checking the ML disk from a Snow Leopard boot disk it was saying ML disk: 8 GB occupied
Then I rebooted on ML and surprise not it says that 42 GB are occupied.
The strange thing is if I check each folder ( in the ML disk) the total size makes 8 GB .
if I do "CMD i" over the ML disk icon it says 42 GB occupied and 78 available ( 120 GB SSD) and also in the Utility Disk: 42 GB taken.

No external Program is installed.

Any idea?

Thanks

 

[mike5065]

For my SSD-based macs, I chose to turn off hibernate.

I have 16GB RAM on both these macs, and hibernate offers me no benefits, while consuming 16GB of SSD.

This may help explain some of what you are experiencing, but I doubt all of it.

Instructions (read in entirety):

https://discussions.apple.com/thread/4492672?tstart=0

 

[Alienraygun]

Hi,

I have made a Mountain Lion install on a formatted disk.
Checking the ML disk from a Snow Leopard boot disk it was saying ML disk: 8 GB occupied
Then I rebooted on ML and surprise not it says that 42 GB are occupied.
The strange thing is if I check each folder ( in the ML disk) the total size makes 8 GB .
if I do "CMD i" over the ML disk icon it says 42 GB occupied and 78 available ( 120 GB SSD) and also in the Utility Disk: 42 GB taken.

No external Program is installed.

Any idea?

Thanks

It's probably making a sleep image of your computer state which can take up lots of disk space. Thus the advice about turning off hibernate from mike.

 

[cjwescott]

This happened to me when I installed 10.8.2 on a Samsung 840 pro ssd.
Problem went away when I started over and installed 10.8.1 on it.

 

[mike5065]

I also have an 840 PRO (mine's 128GB), installed with 10.8.2 using Unibeast on my real macbook pro.

base install was about 12GB, without hibernate.

current image is 34GB, which includes MSOffice (full) and Fusion5 with a Windows 8 image, with Photostream on.

the OP may want to look through the file system using terminal.

for example, the hibernate file can be found in /var/vm