How to open BitLocker encrypted USB/HDD/SD on Mac?

To open BitLocker encrypted drive on Mac, you need to download BitLocker for Mac tool: M3 BitLocker Loader for Mac.

By Ciki | Updated to Home > BitLocker for Mac on October 28th, 2021

Summary: This is a step-by-step tutorial to show you how to open BitLocker encrypted external hard drives, USB flash drives, SD cards and other removable devices on MacBook Pro/Air/iMac, etc.

BitLocker Drive Encryption, including BitLocker To Go for removable devices, is designed by and used on Microsoft Windows to secure your data from unauthorized access. By default, you're unable to open a BitLocker encrypted drive in macOS and Mac OS X.

However, some users are not clear about this and are looking around for solutions to open BitLocker encrypted drives on Mac, just like this one from CNET forum:

I am a project manager in a company. I often take my USB flash disk with me to preside over meetings in different places. In order to enhance my data security, I enabled BitLocker encryption on my USB drive a few days ago. However, unlike before, there is only one Mac computer available in today's conference room. When I inserted this USB drive to the Mac, I got a warning message saying "The disk you inserted was not readable by this computer". I couldn't access the data stored on the USB. Why is it? Can I open a BitLocker encrypted USB flash drive on Mac?

The disk you inserted was not readable by this computer

Let's come straight to the point. Even though you're running macOS or OS X, it's possible to open a BitLocker encrypted drive, such as a USB flash drive, an external hard drive, an SD card or any other storage device. Here is the step-by-step tutorial.

How to open a BitLocker encrypted USB/HDD/SD on Mac?

As aforementioned, a BitLocker encrypted drive is by default inaccessible on Mac. To get rid of this limitation, you can make use of a BitLocker for Mac tool: M3 BitLocker Loader for Mac to mount, read, and write to BitLocker encrypted drives on Mac computers effectively and easily.

Step 1: Download and install a BitLocker for Mac program on your Mac

M3 BitLocker Loader for Mac can be installed on any Mac model, including Intel-based and M1 Macs with M1 Pro and M1 Max chips such as MacBook Pro/Air, iMac or Mac mini. What's more, you can even find macOS Monterey compatible edition in case you need.

Step 2: Launch the BitLocker for Mac tool from Launchpad

After launching, you will see a window asking you to insert the BitLocker encrypted drive.

Step 3: Connect the drive which is encrypted with BitLocker to your Mac

Note: After connecting the BitLocker encrypted drive to your Mac, you may be prompted with an error message "The disk you inserted was unreadable by this computer". Simply click on "Ignore" to get rid of it.

Step 4: Select the BitLocker encrypted drive you want to open and click the "Unlock" button.

unlock BitLocker-encrypted drive on Mac

Step 5: Enter the password (or 48 digits recovery key) and click the "Unlock" button to unlock the drive

Forgot the recovery key? Learn how to find the recovery key >>

After unlocking the BitLocker encrypted drive, you can open the drive and view, edit, write, and move files on it as you do on a Mac's native drive.

When you finished using this drive, you're suggested to lock it again by clicking on the "Lock" icon under the drive.

If you have lost data on BitLocker encrypted drives, please refer to BitLocker data recovery solutions from iBoysoft.

Step 6: Click on the "Eject" icon to safely remove the BitLocker encrypted drive from your Mac

With this tutorial, you can open BitLocker encrypted drives on Mac hassle-free. If you have any further questions regarding BitLocker for Mac solutions, please feel free to let us know.