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You are here: Home / Mac / How to Format an External Hard Drive for Both Mac and Windows

How to Format an External Hard Drive for Both Mac and Windows

By Louis Roundtree 0 comments Last updated March 19, 2025

Things to Know
  • Mac and Windows use different file system formats by default.
  • If you try to use the same hard drive on each one, you may have compatibility issues.
  • You can get around this by formatting the drive to the correct format – exFAT.

If you want to use the same external hard drive, or even a USB flash drive, on both Windows and Mac platforms, you need to format it correctly. This is because Windows and Mac use different file system formats – NTFS on Windows and HFS on Mac – and they don’t work well together by default.

This guide shows how to format an external drive for both Mac and Windows, with one method for each platform.

How to Format an External Drive for Both Mac and Windows on a Mac

We’ll start off with a look at how to format your drive on the Mac. For this, you’ll use Mac OS’ built-in Disk Utility tool.

Step 1. Connect your external drive to the Mac.

Step 2. Press “Command” and the spacebar at the same time. Then type “Disk Utility” into the search bar to find the Disk Utility app, and open it.

How to Format an External Hard Drive so It Works on Both Mac and Windows 1

Step 3. Choose the drive you wish to format from the sidebar on the left.

Step 4. Click on “Erase.”

How to Format an External Hard Drive so It Works on Both Mac and Windows 2

Step 5. Type in a name for your drive and then select “exFAT” as the format. For the “Scheme,” choose “Master Boot Record.”

How to Format an External Hard Drive so It Works on Both Mac and Windows 3

Step 6. Click “Erase” one last time to complete the process. Note that this will delete everything on the drive, so you might want to back up any key files beforehand.

How to Format an External Drive for Both Mac and Windows on Windows

You can also format your drive to work on both Mac and Windows on a Windows PC or laptop. Again, this is done with the help of a built-in tool – Disk Management – so you don’t have to download any third-party software.

Step 1. Connect your drive to your Windows machine.

Step 2. Open Disk Management. You can easily find it just by typing “Disk Management” into the search bar. Note that on Windows 11, it will appear in the Start menu under the name “Create and format hard disk partitions.”

How to Format an External Hard Drive so It Works on Both Mac and Windows 4

Step 3. Find your drive in the list and right-click on it. Then select “New Simple Volume.”

How to Format an External Hard Drive so It Works on Both Mac and Windows 5

Step 4. Follow the prompts of the “New Simple Volume Wizard” to set up the drive. You’ll need to pick a desired size, assign a letter to the drive, and select the desired format. Make sure to choose exFAT.

How to Format an External Hard Drive so It Works on Both Mac and Windows 6

Step 5. Type in a new name for your drive in the “Volume Label” box. Then click the “Next” button, followed by “Finish” to complete the process. Again, remember that this will delete anything that is on the drive at the time, so make backups of any important files first.

How to Format an External Hard Drive so It Works on Both Mac and Windows 7

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Louis Roundtree
Louis Roundtree

As an avid gamer, I’ve run into my fair share of error codes and weird faults that have forced me to find fixes to problems I never anticipated. That gave me a passion for sharing those fixes with others so we can all game without feeling like our hardware is rebelling against us.

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Last Updated on March 20, 2025 by Louis Roundtree