By default, Boot Camp will reserve 20 GB for your Windows partition and leave the rest for a single Mac OS X partition. You can see this on the partition slider in the Boot Camp Assistant immediately following your download of the Windows support software. If you drag the grey dot between the two partitions on the slider, you can adjust how the hard drive is split between the Mac OS X and Windows.

1. Boot Camp Download Size On Mac Os
2. Bootcamp Download Size On Mac Computers

The Boot Camp Assistant gives users a simple slider tool to allocate partition space between Mac OS X and Windows. Screencap by Stephanie Crawford for HowStuffWorks By default, Boot Camp will reserve 20 GB for your Windows partition and leave the rest for a single Mac OS X partition. Sep 14, 2020. Apr 17, 2020.

Before you commit to your slider selection, consider the size of Windows itself and how you'll be using it. Windows 7 requires 16 GB of drive space for the 32-bit version and 20 GB for the 64-bit version. That means the default 20 GB is a tight squeeze for installing Windows 7, and you'll probably want at least 5 to 10 GB more for small software apps and files you'll use exclusively in Windows.

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There's a good chance you'll be using Windows to run some specific software. If so, you can add that software's requirements to your total. For example, if you're using Windows to play 'World of Warcraft,' add at least another 25 GB of space to meet the game's minimum requirements, and you'll probably want more to save game data and install expansions over time.

As you grow your Windows partition, though, don't ignore the space you'll need on the Mac side. The slider should show you the available space you have on the Mac side as you increase or decrease the amount on the Windows side. Boot Camp Assistant will not let you go below 8 GB of available space on the Mac side, but you'll probably want a lot more than that if you use your Mac for storing or editing music and videos.

When you're happy with the slider position, click 'Install' to continue. If you haven't installed your Windows disc, Boot Camp Assistant will prompt you to do so. Next, we'll navigate your Windows install and setup.

When you install Microsoft Windows on your Mac, Boot Camp Assistant automatically opens the Boot Camp installer, which installs the latest Windows support software (drivers). If that doesn't happen, or you experience any of the following issues while using Windows on your Mac, follow the steps in this article.

• Your Apple mouse, trackpad, or keyboard isn't working in Windows.
  Force Touch isn't designed to work in Windows.
• You don't hear audio from the built-in speakers of your Mac in Windows.
• The built-in microphone or camera of your Mac isn't recognized in Windows.
• One or more screen resolutions are unavailable for your display in Windows.
• You can't adjust the brightness of your built-in display in Windows.
• You have issues with Bluetooth or Wi-Fi in Windows.
• You get an alert that Apple Software Update has stopped working.
• You get a message that your PC has a driver or service that isn't ready for this version of Windows.
• Your Mac starts up to a black or blue screen after you install Windows.

If your Mac has an AMD video card and is having graphics issues in Windows, you might need to update your AMD graphics drivers instead.

Install the latest macOS updates

Before proceeding, install the latest macOS updates, which can include updates to Boot Camp.

Format a USB flash drive

To install the latest Windows support software, you need a 16GB or larger USB flash drive formatted as MS-DOS (FAT).

1. Start your Mac from macOS.
2. Plug the USB flash drive into your Mac.
3. Open Disk Utility, which is in the Utilities folder of your Applications folder.
4. Choose View > Show All Devices from the menu bar.
5. From the sidebar in Disk Utility, select your USB flash drive. (Select the drive name, not the volume name beneath it.)
   
6. Click the Erase button or tab.
7. Choose MS-DOS (FAT) as the format and Master Boot Record as the scheme.
8. Click Erase to format the drive. When done, quit Disk Utility.

Download the Windows support software

After preparing your USB flash drive, complete these steps:

1. Make sure that your Mac is connected to the Internet.
2. Open Boot Camp Assistant, which is in the Utilities folder of your Applications folder.
3. From the menu bar at the top of your screen, choose Action > Download Windows Support Software, then choose your USB flash drive as the save destination. When the download completes, quit Boot Camp Assistant.
   

Learn what to do if you can't download or save the Windows support software.

Install the Windows support software

Boot Camp Download Size On Mac Os

After downloading the Windows support software to your flash drive, follow these steps to install the software. (If you're attempting to resolve issues with a Bluetooth mouse or keyboard, it might be easier to use a USB mouse or keyboard until these steps are complete.)

1. Make sure that the USB flash drive is plugged into your Mac.
2. Start up your Mac in Windows.
3. From File Explorer, open the USB flash drive, then open Setup or setup.exe, which is in the WindowsSupport folder or BootCamp folder. When you're asked to allow Boot Camp to make changes to your device, click Yes.
4. Click Repair to begin installation. If you get an alert that the software hasn't passed Windows Logo testing, click Continue Anyway.
5. After installation completes, click Finish, then click Yes when you're asked to restart your Mac.

Learn more

If you can't download or save the Windows support software:

• If the assistant says that the Windows support software could not be saved to the selected drive, or that the USB flash drive can't be used, make sure that your USB flash drive has a storage capacity of at least 16GB and is formatted correctly.
• If the assistant doesn't see your USB flash drive, click Go Back and make sure that the drive is connected directly to the USB port on your Mac—not to a display, hub, or keyboard. Disconnect and reconnect the drive, then click Continue.
• If the assistant says that it can't download the software because of a network problem, make sure that your Mac is connected to the Internet.
• Make sure that your Mac meets the system requirements to install Windows using Boot Camp.

Bootcamp Download Size On Mac Computers

If a Mac feature still doesn't work after updating the Windows support software, search for your symptom on the Apple support website or Microsoft support website. Some features of your Mac aren't designed to work in Windows.