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What is BitLocker for Mac?

BitLocker for Mac is a lightweight utility that allows you to read from and write to BitLocker-encrypted drives on a Mac.

By default, macOS does not recognize BitLocker-encrypted drives. If you're using a Mac and need to access and modify files on a BitLocker-encrypted drive, you will need a BitLocker for Mac utility software.

Features of BitLocker for Mac utility

M3 BitLocker Loader for Mac is the first and only BitLocker for Mac utility software that is fully compatible with Apple Silicon chips (M4, M3, M2, M1), macOS 26 Tahoe and macOS 15 Sequoia.

Additionally, it is the only software that allows you to mount BitLocker-encrypted drives in Finder as physical drives (not virtual drives), offering full read-write access support.

As a BitLocker To Go for Mac utility, M3 BitLocker Loader for Mac is recommended by IS &T staff members in Knowledge Base of Massachusetts Institute of Technology. Learn more >>

Read/Write to BitLocker drive on macOS

M3 BitLocker Loader for Mac is a utility software designed to enable you to unlock, open, read and write to BitLocker-encrypted drives on Mac.

With it, you can copy files from a BitLocker-protected drive to your Mac, as well as edit, delete, rename, and modify files on the BitLocker-encrypted drive.

Fast read-write speed

Unlike other BitLocker for Mac utilities that rely on the third-party driver, osxfuse, which often results in slower read-write speeds, check these three examples from reddit, yuneecpilots and stackexchange forums.

M3 BitLocker Loader for Mac uses a custom-developed driver. This allows it to deliver the same fast read-write performance as your Mac's native drive once the BitLocker-encrypted drive is unlocked and mounted in Finder.

Easy-to-use

M3 BitLocker Loader for Mac offers two convenient ways to access BitLocker-encrypted drives on your Mac:

File Manager option – Securely import and export files from a BitLocker drive without enabling a system extension. This provides a lightweight, hassle-free way to manage your BitLocker encrypted data.

Volume Mounter option – Unlock and mount a BitLocker-protected drive in Finder like a regular disk by entering your password. Once mounted, you can freely read, write, delete and modify files as needed—just like any other drive on your Mac. This option requires enabling a system extension.

Mount BitLocker drive as a physical drive

Unlike other BitLocker for Mac utilities, which mount BitLocker drives as virtual drives and often cause unexpected errors.

M3 BitLocker Loader for Mac is the only utility software that can mount a BitLocker-encrypted drive as a physical drive. This ensures smooth and secure operation of the mounted drive.

Tips: The virtual drive cannot be recognized by Time Machine and the 3rd-party utility (For example: Sync software).

BitLocker To Go for Mac

With M3 BitLocker Loader for Mac, no program is installed on your BitLocker drive, ensuring that your data remains secure and untouched. Your information stays safe while using the tool.

BitLocker for Apple Silicon Macs: M1, M2, M3, M4

The Apple Silicon Mac, introduced in 2020, represents a new generation of Mac computers powered by Apple's custom ARM-based processors.

M3 BitLocker Loader for Mac is the first and only BitLocker for Mac tool designed to work with Apple Silicon M4, M3, M3 Pro, M3 Max, M2, M2 Pro, M2 Max, M2 Ultra, M1, M1 Pro, and M1 Max Mac.

BitLocker for macOS & Mac OS X

The M3 BitLocker Loader for Mac tool is fully compatible with macOS Tahoe 26, macOS Sequoia 15, macOS Sonoma 14, macOS Ventura 13, macOS Monterey 12, macOS Big Sur 11, macOS Catalina 10.15, macOS Mojave 10.14, and macOS High Sierra 10.13.

For users running macOS Sierra 10.12 or earlier versions of Mac OS X, please reach out to [email protected] for older version.

Encrypt external drives with BitLocker on macOS

As the use of high-capacity USB drives becomes more prevalent, the risk of sensitive data being lost or stolen has grown significantly.

M3 BitLocker Loader for Mac utilizes the BitLocker Drive Encryption algorithm to secure external drives formatted with NTFS, FAT32, or exFAT on macOS, safeguarding your sensitive data from potential loss or theft.

Drives encrypted with M3 BitLocker Loader for Mac can be easily accessed on Windows by entering a password, without the need to install additional software.

With M3 BitLocker Loader for Mac and Microsoft BitLocker Drive Encryption, seamless cross-platform encryption of USB drives is now possible on both Windows and macOS.

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How to access BitLocker drive on Mac

With a simple-to-use interface, accessing BitLocker-protected drive on Mac is as easy as using a Mac-native drive.

  • 1

    Download and install

    Download, install and launch M3 BitLocker Loader for Mac on your Mac computer.

  • 2

    Insert a BitLocker encrypted drive

    Insert a BitLocker encrypted drive to your Mac computer.

  • 3

    Access BitLocker encrypted drive on Mac

    Click Unlock, select "Volume Mounter" option, enter the password and then unlock it.

    After mounting BitLocker encrypted drive in read-write mode, you can read and write to BitLocker encrypted drive as same as your Mac's native drive.

    Learn more >>
  • M3 BitLocker Loader for Mac
  • Insert a BitLocker drive to Mac
  • Unlock BitLocker drive on Mac
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How to encrypt an external drive with BitLocker encryption on Mac

Use this BitLocker for macOS utility to encrypt your external drive with BitLocker drive encryption method on Mac easily to protect your files.

  • 1

    Click Encrypt

    Click Encrypt in M3 BitLocker Loader for Mac main interface and then open the encryption window.

  • 2

    Select a drive to encrypt

    Select a drive from the storage device list and follow the wizard to encrypt it.

  • 3

    Enter a password and back up recovery key

    Enter a password (It is used to encrypt your drive).

    Save 48-digit recovery key (It is used to unlock BitLocker drive when you forget the password) to a safe place.

    Click "Start Encryption" and the process can't be canceled during the encryption.

    Learn more >>
  • M3 BitLocker Loader for Mac
  • Select a drive to encrypt
  • Back up BitLocker Recovery key
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Technical Specifications

macOS supported:

macOS Tahoe, Sequoia, Sonoma, Ventura, Monterey, Big Sur, Catalina, Mojave, High Sierra

Storage device supported:

HDD, SSD, USB flash drive, SD card, memory card, memory stick, etc.

File system supported:

NTFS, FAT32, exFAT

Mac model supported:

Intel-based and Apple Silicon-based Mac (M4, M3, M3 Pro, M3 Max, M2, M2 Pro, M2 Max, M2 Ultra, M1, M1 Pro, M1 Max Mac)

Customer Reviews

Oliver Cotton, 2025-06-26

I haven't experienced any issues using the M3 Bitlocker Loader for Mac, thanks for this great tool.

Sergio Ryan, 2023-08-15

The software worked well to copy files from BitLocker drive to my MacBook Pro.

Alastair Levy, 2023-01-17

I recently subscribed to M3 BitLocker for Mac to use it to unlock a specific external disc, for which it worked very well. Thank you for this.

Cory del Mar, 2021-02-16

Very nice software and easy to use, was able to help my brother remotely over video call, to open his external hard disk which encrypted with BitLocker.

Mike, 2021-01-28

I tried another tool which works for me but isn't quite as convenient as your tool "M3 Bitlocker Loader for Mac v6.2".

Massimo, 2020-11-26

Yesterday I tried HasleoBitLockerAnywhere but this tool, strange, it unlock the disk but the disk works only in the Finder, while in another filing tools like pathFinder, ForkLift etc. it doesn't permit to write files. Your utility "M3 Bitlocker Loader for Mac v6.0" works very well compared to the other.

Rob, 2020-10-14

Thanks for the great Bitlocker for Mac tool, helped me read Bitlocker encrypted USB drive on my macbook air.

See all reviews >>

BitLocker for Mac FAQ

A

Yes, but you need to install M3 BitLocker Loader for Mac on your Mac.

A

You need to install M3 BitLocker Loader for Mac so that you can read/write BitLocker encrypted drive on Mac or encrypt external drive by BitLocker.

A

The Mac version of BitLocker is a tool which can read/write BitLocker encrypted drive on Mac and encrypt external drives on Mac.

A

Install BitLocker for Mac tool (Such as M3 BitLocker Loader for Mac) on your Mac.

A

Yes, M3 BitLocker Loader for Mac is 100% safe. It won't corrupt your data while you are using it to read and write your BitLocker encrypted drive on Mac.

A

1. The trial version of M3 BitLocker Loader for Mac can view files and preview documents, photos, videos, audio, etc. in BitLocker encrypted drive.
2. Trial version can encrypt external drives.

To read and write BitLocker encrypted drive, you need to purchase full version.

A

You need to install M3 BitLocker Loader for Mac to unlock a BitLocker-encrypted drive on Mac.

A

Please contact [email protected] to get the version of M3 BitLocker Loader for Mac that works with Mac OS X.

A

If you don't have the password or recovery key, M3 BitLocker Loader for Mac and iBoysoft Data Recovery won't break into your BitLocker encrypted drive. Please refer to the solution: How to unlock BitLocker drive without password and recovery key?

A

If you don't want BitLocker to protect your drive any more, you can format the drive in Mac's Disk Utility.

A

You need to remove BitLocker password on a Windows PC. Go to Start > Control Panel > System and Security > BitLocker Drive Encryption. Then unlock your drive with correct BitLocker password. Click "Turn off BitLocker" and click "Decrypt Drive".

More FAQs >>

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BitLocker

M3 BitLocker Loader for Mac

Your best BitLocker for Mac solution to unlock, mount, open, read, and write BitLocker encrypted drive on Mac with ease.

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Release History

2024-09-27

Released M3 BitLocker Loader for Mac V7.6

What's new: Compatible with macOS Sequoia 15; Fix bugs and improve product quality.

2023-10-12

Released M3 BitLocker Loader for Mac V7.2

What's new: Compatible with macOS Sonoma 14; Update the driver; Fix bugs and improve product quality.

2022-11-03

Released M3 BitLocker Loader for Mac V7.0

What's new: Compatible with macOS Ventura

2021-08-19

Released M3 BitLocker Loader for Mac V6.6

What's new: Release a new basic edition which supports read-only access to BitLocker drive

2021-01-25

Released M3 BitLocker Loader for Mac V6.2

What's new: Improve the read-write driver.

2021-01-05

Released M3 BitLocker Loader for Mac V6.1

What's new: Fix the incorrect activation message and improve NTFS driver.

2020-12-01

Released M3 BitLocker Loader for Mac V6.0

What's new: Compatible with macOS Big Sur 11 and Apple Silicon M1 Mac; Develop a new driver to read/write BitLocker drive on Mac...

2019-11-01

Released M3 BitLocker Loader for Mac V5.6

What's new: Compatible with macOS Catalina 10.15.

2018-08-31

Released M3 BitLocker Loader for Mac V5.0

What's new: Encrypt external drive with BitLocker; Support Mojave 10.14; Improve read/write speed; Display drive name.

2017-11-23

Released M3 BitLocker Loader for Mac V4.8

What's new: Improve read/write speed in volume mounter option; Mount BitLocker encrypted drive in read-only mode.

2017-02-16

Released M3 BitLocker Loader for Mac V4.2

What's new: Support to preview documents, photos, videos, etc.; Generate reports; Fix bugs and improve product quality.

2016-12-02

Released M3 BitLocker Loader for Mac V4.0

What's new: Brand-new UI to make operations very simple; Change drive name; Save password.

2016-09-18

Released M3 BitLocker Loader for Mac V3.8

What's new: Support macOS 10.12 (Sierra); Remove 7-day trial time limitation in trial version.

2016-06-12

Released M3 BitLocker Loader for Mac V3.6

What's new: Support new BitLocker drive encryption algorithm (XTS-AES) and write BitLocker encrypted exFAT drive.

2015-11-04

Released M3 BitLocker Loader for Mac V3.2

Write BitLocker encrypted FAT32 & NTFS drive, brand-new UI, compatible with Mac OS X 10.11 (El Capitan)

2015-07-27

Released M3 BitLocker Loader for Mac V2.8

What's new: Fixed developer certificate bug on Mac OS X 10.6, compatible with Mac OSX 10.6 (Snow Leopard)

2015-05-20

Released M3 BitLocker Loader for Mac V2.6

What's new: Support NTFS and ExFAT file systems.

2015-04-15

Released M3 BitLocker Loader for Mac V2.1

What's new: Compatible with Mac OSX 10.10 (Yosemite)

2015-04-05

Released M3 BitLocker Loader for Mac V2.0

What's new: Support FAT file system and compatible with Mac OS X 10.9/10.8/10.7

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