How to Install Windows 10 Without Deleting the MSR Reserved Partition

Last Updated: Jan 25, 2024 by

If you’re a Mac user looking to install windows 10 on your computer, you may have encountered the issue of the MSR reserved partition being deleted during the installation process. This can cause problems with your computer’s booting process and can be frustrating to deal with. In this article, we will discuss how to install Windows 10 without deleting the MSR reserved partition, so you can successfully run both operating systems on your Mac.

Windows 10 Installation Media for Mac

Before you begin the installation process, you will need to create a Windows 10 installation media for your Mac. This can be done by downloading the Windows 10 ISO file from Microsoft’s website and using a third-party tool such as Boot Camp Assistant or Rufus to create a bootable USB drive. Make sure to follow the instructions carefully and use a USB drive with enough storage space.

Windows 10 Installation Steps

Once you have your installation media ready, you can begin the installation process. Here are the steps to follow:

  1. Insert the USB drive into your Mac and restart your computer.
  2. Hold down the Option key while your computer is restarting to access the boot menu.
  3. Select the USB drive from the boot menu and press Enter.
  4. The Windows 10 installation process will begin. Follow the on-screen instructions to select your language, time and currency format, and keyboard or input method.
  5. When you reach the “Where do you want to install Windows?” screen, select the partition labeled “BOOTCAMP” and click on “Drive options (advanced).”
  6. A new window will open. Select the “BOOTCAMP” partition again and click on “Format.”
  7. Once the partition is formatted, click on “Next” to continue with the installation process.
  8. Windows 10 will now be installed on your computer without deleting the MSR reserved partition.


If you encounter any issues during the installation process, here are some troubleshooting tips:

  • If you receive an error message saying that the MSR reserved partition cannot be deleted, try restarting your computer and starting the installation process again.
  • If the MSR reserved partition is still being deleted, you can try using a different USB drive or creating a new Windows 10 installation media.
  • If you are unable to access the boot menu, you may need to change your computer’s boot settings. This can usually be done by pressing the F2 or Del key while your computer is restarting.


Installing Windows 10 on a Mac can be a bit tricky, but by following these steps, you can successfully install it without deleting the MSR reserved partition. Remember to always back up your important files before attempting any major changes to your computer’s operating system. If you encounter any issues, don’t hesitate to seek help from a professional or reach out to Microsoft’s customer support. With these tips, you can enjoy the benefits of both Mac and Windows on your computer.

Gulrukh Ch

About the Author: Gulrukh Ch

Gulrukh Chaudhary, an accomplished digital marketer and technology writer with a passion for exploring the frontiers of innovation. Armed with a Master's degree in Information Technology, Gulrukh seamlessly blends her technical prowess with her creative flair, resulting in captivating insights into the world of emerging technologies. Discover more about her on her LinkedIn profile.

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