Installing Boot Camp- space issue

I'm trying to install Boot Camp/Windows on a MacBook Air running Snow Leopard. I have 23.4GB of free space, but an error message comes up saying that I need at least 10 GB of space to proceed. What's happening?

Hi arcticbelle,
Boot Camp needs a minimum of 10GB of contiguous free space in order to install. Disk Utility will show two different "free" readings, depending on where you look. The larger figure, which the Finder and other things will use, is the total free space available. The second is the amount of free space available for a new partition. It's shown when you select the top line for the drive, click the Partition tab, then select a partition, the "Available" amount may be smaller.
This is because partitions, unlike folders, must occupy contiguous space on a disk. The data on your OSX partition is scattered over it, not all nicely packed together. That's normal, as you add, update, and delete files, not every nook and cranny is used again immediately.
You could back up your drive (on two different HDs, to be safe), reformat it to 2 parttions, then restore the backup. But it's going to be very tight, and you'll likely have performance problems because of it.
Try to delete anything you don't need, and/or offload stuff you don't use often and delete it.

Similar Messages

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    I am trying to install Boot Camp but it says I haven't got enough free space on my start up disk - that I need at least 10GB free space - however in disk utility it says I have 27GB free!

    if your SSD is only 60 GBs, then you don't have space on which to install Windows. That 27 GBs is space you need to have for adding files you create, music you download, added applications, pictures, etc. You need to maintain at least 10 GBs as free space for OS X, plus you need space for files OS X will create and add to over time.
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    Cry
    -Oil Pedestal

    Does [this firmware update|http://www.apple.com/downloads/macosx/apple/firmware_hardware/imacefifir mwareupdate13.html] apply to your machine? If so, putting it on may fix the boot from DVD problem.

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