Mar 29, 2017  I just rebooted my MacBook pro retina and reinstalled windows 10 via bootcamp. I have an external ssd and I usually rely on thunderbolt. It also have. Bootcamp Windows 10 Thunderbolt not reconized. Yesterday I installed Bootcamp on my Mac and then installed Windows 10. My Mac partition seems fine and working normally. My Windows partition.

What you need to install Windows 10 on Mac

• MacBook introduced in 2015 or later
• MacBook Air introduced in 2012 or later
• MacBook Pro introduced in 2012 or later
• Mac mini introduced in 2012 or later
  

• iMac introduced in 2012 or later¹
• iMac Pro (all models)
• Mac Pro introduced in 2013 or later
  

The latest macOS updates, which can include updates to Boot Camp Assistant. You will use Boot Camp Assistant to install Windows 10.

64GB or more free storage space on your Mac startup disk:

• Your Mac can have as little as 64GB of free storage space, but at least 128GB of free storage space provides the best experience. Automatic Windows updates require that much space or more.
• If you have an iMac Pro or Mac Pro with 128GB of memory (RAM) or more, your startup disk needs at least as much free storage space as your Mac has memory.²

An external USB flash drive with a storage capacity of 16GB or more, unless you're using a Mac that doesn't need a flash drive to install Windows.

A 64-bit version of Windows 10 Home or Windows 10 Pro on a disk image (ISO) or other installation media. If installing Windows on your Mac for the first time, this must be a full version of Windows, not an upgrade.

• If your copy of Windows came on a USB flash drive, or you have a Windows product key and no installation disc, download a Windows 10 disk image from Microsoft.
• If your copy of Windows came on a DVD, you might need to create a disk image of that DVD.
  

How to install Windows 10 on Mac

To install Windows, use Boot Camp Assistant, which is included with your Mac.

1. Use Boot Camp Assistant to create a Windows partition

Open Boot Camp Assistant, which is in the Utilities folder of your Applications folder. Then follow the onscreen instructions.

• If you're asked to insert a USB drive, plug your USB flash drive into your Mac. Boot Camp Assistant will use it to create a bootable USB drive for Windows installation.
• When Boot Camp Assistant asks you to set the size of the Windows partition, remember the minimum storage-space requirements in the previous section. Set a partition size that meets your needs, because you can't change its size later.

2. Format the Windows (BOOTCAMP) partition

When Boot Camp Assistant finishes, your Mac restarts to the Windows installer. If the installer asks where to install Windows, select the BOOTCAMP partition and click Format. In most cases, the installer selects and formats the BOOTCAMP partition automatically.

3. Install Windows

Unplug any external devices that aren't necessary during installation. Then click Next and follow the onscreen instructions to begin installing Windows.

4. Use the Boot Camp installer in Windows

After Windows installation completes, your Mac starts up in Windows and opens a ”Welcome to the Boot Camp installer” window. Follow the onscreen instructions to install Boot Camp and Windows support software (drivers). You will be asked to restart when done.

• If the Boot Camp installer never opens, open the Boot Camp installer manually and use it to complete Boot Camp installation.
• If you have an external display connected to a Thunderbolt 3 port on your Mac, the display will be blank (black, gray, or blue) for up to 2 minutes during installation.

How to switch between Windows and macOS

Restart, then press and hold the Option (or Alt) ⌥ key during startup to switch between Windows and macOS.

Learn more

If you have one of these Mac models using OS X El Capitan 10.11 or later, you don't need a USB flash drive to install Windows:

• MacBook introduced in 2015 or later
• MacBook Air introduced in 2015 or later³
• MacBook Pro introduced in 2015 or later³

• iMac introduced in 2015 or later
• iMac Pro (all models)
• Mac Pro introduced in late 2013
  

Early 2011 Mac Boot Camp Windows 10 On External Drive Download

To remove Windows from your Mac, use Boot Camp Assistant, not any other utility.

For more information about using Windows on your Mac, open Boot Camp Assistant and click the Open Boot Camp Help button.

1. If you're using an iMac (Retina 5K, 27-inch, Late 2014) or iMac (27-inch, Late 2013) or iMac (27-inch, Late 2012) with a 3TB hard drive and macOS Mojave or later, learn about an alert you might see during installation.

2. For example, if your Mac has 128GB of memory, its startup disk must have at least 128GB of storage space available for Windows. To see how much memory your Mac has, choose Apple menu  > About This Mac. To see how much storage space is available, click the Storage tab in the same window.

3. These Mac models were offered with 128GB hard drives as an option. Apple recommends 256GB or larger hard drives so that you can create a Boot Camp partition of at least 128GB.

Boot Camp Assistant User Guide

You need an external USB drive to install Windows on older Mac computers. To find out whether you have a Mac that requires an external USB drive, see the “Learn more” section in the Apple Support article Install Windows 10 on your Mac with Boot Camp Assistant. If your Mac is a newer model that doesn’t require a USB drive, follow the instructions in Install Windows on your newer Mac using Boot Camp instead.

What you need

• The keyboard and mouse or trackpad that came with your Mac. (If they aren’t available, use a USB keyboard and mouse.)

• A blank 16 GB or larger external USB 2 flash drive, formatted as MS-DOS (FAT).

  To format an external USB drive as MS-DOS (FAT), use Disk Utility, located in /Applications/Utilities. In Disk Utility, choose View > All Devices, select the USB drive in the sidebar, then click Erase in the toolbar. In the dialog, enter a name for the drive, choose MS-DOS (FAT) from the Format pop-up menu, choose Master Boot Record from the Scheme pop-up menu, then click Erase.

• A full-installation, 64-bit version of Windows 10 on a disk image (ISO file) or other installation media.

  You can download a Windows 10 Disc Image (ISO File) from Microsoft.

• Sufficient free storage space on your startup drive. For information about the amount of free space needed, see the Apple Support Article Install Windows 10 on your Mac with Boot Camp Assistant.

Before you begin

Before you install Windows, make sure you back up important files.

You can use Time Machine or any other method to back up your files. For information about backing up files, see Back up your files with Time Machine and Ways to back up or protect your files.

Perform the installation

Do the following steps in order.

Step 1: Check for software updates

Before you install Windows, install all macOS updates.

1. On your Mac, log in as an administrator, quit all open apps, then log out any other users.

2. Choose Apple menu > System Preferences, click Software Update, then install all available updates.

   If your Mac restarts after installing an update, open Software Update again to install any additional updates.

Step 2: Prepare your Mac for Windows

Boot Camp Assistant prepares your Mac by creating a new partition for Windows named BOOTCAMP and downloading the Boot Camp support software.

Important: If you’re using a portable Mac, connect it to a power source before continuing.

1. Connect an external USB drive or insert a flash drive into the USB port on your Mac; keep it connected or inserted while you install Windows and the Windows support software.

2. On your Mac, open Boot Camp Assistant , located in /Applications/Utilities.

3. At the introduction screen, click Continue.

   The system is checked for total available disk space. Older Time Machine snapshots and cached iCloud files are removed to make space for Boot Camp. This process may take a long time to complete (you can click the Stop button to skip this process).

4. At the Select Tasks step, select all the tasks, then click Continue.

5. At the Create Bootable USB Drive for Windows Installation step, choose the Windows ISO image and the USB drive, then click Continue.

   The Windows files are copied to the USB drive. This process may take a long time to complete (you can click the Stop button to interrupt this process).

6. At the Create a Partition for Windows step, specify a partition size by dragging the divider between the macOS and Windows partitions. If you have multiple internal hard drives, you can select a different hard drive from the one running macOS and create a single partition on that drive to use solely for Windows.

7. Click Install.

Boot Camp Download

When this step is complete, the Windows installer starts.

Step 3: Install Windows

1. In the Windows installer, follow the onscreen instructions.

2. When you’re asked where to install Windows, select the BOOTCAMP partition (you may need to scroll through the list of partitions to see it), then click Next.

   WARNING: Do not create or delete a partition, or select any other partition. Doing so may delete the entire contents of your macOS partition.

3. Continue following the onscreen instructions to finish installing Windows.

   After you install the Windows software, your Mac automatically restarts using Windows.

4. Follow the onscreen instructions to set up Windows.

Step 4: Install Boot Camp on Windows

After installing Windows, Boot Camp drivers that support your Mac hardware start installing.

Note: If the support software doesn’t install automatically, you need to install it manually. For instructions, see the Apple Support article If the Boot Camp installer doesn't open after using Boot Camp Assistant.

1. In the Boot Camp installer in Windows, follow the onscreen instructions.

   Important: Do not click the Cancel button in any of the installer dialogs.

   If a message appears that says the software you’re installing has not passed Windows Logo testing, click Continue Anyway.

   You don’t need to respond to installer dialogs that appear only briefly during installation, but if a dialog asks you to install device software, click Install.

   If nothing appears to be happening, there may be a hidden window that you must respond to. Look behind open windows.

2. When the installation is complete, click Finish, then click Yes to restart your Mac.

3. After your Mac restarts, follow the instructions for any other installers that appear.