To see available hard drive space, click on the Apple menu in the upper left and then select About This Mac.Play it safe and go with the large allocation. Boot Camp says it only needs 50 GB, but Apple’s own online support document recommends 55GB. To use Boot Camp, you’ll need at least 55 GB of free space on your Mac’s hard drive. Make sure your Mac has enough hard drive space If your Mac doesn’t meet the criteria, you’ll need to choose a version of Windows with lower system requirements.Compare your Mac’s specs for Processor and Memory (RAM) against those listed in the Windows system requirements.Next, click on the Apple menu in the upper left and choose About This Mac.Examine the system requirements for the version of Windows you plan on buying: Windows 10, Windows 8, or Windows 7.Since different versions of Windows have different system requirements for the amount of RAM, hard drive space, and processor speed, you’ll want to double-check to make sure your system can run that edition comfortably.

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