I will setup a USB key to install Mavericks.

I would like to know the needed size of the partition to install Mavericks.

3 Answers 3


For me, the Mavericks partition uses 5.36 GB (5,355,311,104 Bytes) (per Disk Utility). That's 4.98 GB in old-school "binary" types like me (4.98 GiB).

This is subject to change given partition overhead, block size, a Mavericks version. So I'd allocate a little more to the partition.

  • This is very close to my own results.
    – Coyote
    Oct 22, 2013 at 23:58
  • the recommended is 8GB
    – Macmaniman
    Oct 24, 2013 at 1:15

The Mavericks install app is about 5.3GB and it is compressed. That should be how much space it will take up on a USB stick. Just drop the installer on the stick and double click on the installer to install.


I have partitioned my 64 GB USB stick into two parts, one being 5 361 369 088 b large out of which 5 951 488 b is free after making it Mavericks installation disk.

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