TrueCrypt for macOS Big Sur/Catalina alternative

Posted by Tim to BitLocker for Mac Tips on March 9th, 2017

TrueCrypt for Mac

TrueCrypt was a free and open-source disk encryption utility first launched in 2004. It can create a virtual encrypted disk within a file, or encrypt a partition or the whole storage device. Once encrypted, the data stored on a partition requires a password to access. TrueCrypt was a popular means of disk encryption on both Mac OSX and Windows operating systems with millions of users.

Why need TrueCrypt alternative for Mac? released an official announcement on while containing the following messages:

"WARNING: Using TrueCrypt is not secure as it may contain unfixed security issues.

This page exists only to help migrate existing data encrypted by TrueCrypt.

The development of TrueCrypt was ended in 5/2014 after Microsoft terminated support of Windows XP. Windows 8/7/Vista and later offer integrated support for encrypted disks and virtual disk images. Such integrated support is also available on other platforms (click here for more information). You should migrate any data encrypted by TrueCrypt to encrypted disks or virtual disk images supported on your platform."

It is not only for Windows users, but for all of you who are using TrueCrypt, including Mac OS X and Linux users. Windows users can transfer to BitLocker, then how about Mac users?

TrueCrypt for macOS Big Sur/Catalina alternative: BitLocker for Mac has suggested Windows users to transfer to BitLocker, but Microsoft didn't release BitLocker for Mac OS, how about Mac users? With the help of M3 BitLocker Loader for Mac, you still can use BitLocker if you are a cross-platform (Windows and Mac) user.

M3 BitLocker Loader for Mac is a brilliant and smart program which can open/access/mount BitLocker encrypted external hard drive and USB flash drive on Mac computer, but you need to create a BitLocker encrypted volume on Mac computer with M3 BitLocker Loader for Mac firstly. After that, you can read and write BitLocker encrypted volume with M3 BitLocker Loader for Mac under Mac computer.

Tutorial to encrypt USB flash drive with BitLocker on macOS & Mac OS X.

Step 1: Download and install M3 BitLocker Loader for Mac.

Step 2: Insert an external drive (such as external hard drive, USB drive, flash drive) into Mac computer.

Step 3: Launch M3 BitLocker Loader for Mac.

Step 4: Click "Encrypt" button in toolbar.

M3 BitLocker Loader for Mac

Step 5: Select the partition which you want to encrypt and click Encrypt.

Encrypt drive with M3 BitLocker Loader for Mac

Step 6: Enter the password.

Step 7: Save the recovery key.

Step 8: Complete BitLocker drive encryption.

After encrypting external drive with BitLocker on Mac, you can use M3 BitLocker Loader for Mac to read/write BitLocker encrypted drive on Mac Mini, Mac Pro, MacBook, MacBook Pro, MacBook Air, iMac with macOS Catalina 10.15/Mojave 10.14/High Sierra 10.13 Operating Systems.

If I am a Linux cross-platform user, how to access BitLocker encrypted drive in Linux?

TrueCrypt alternative for Linux

M3 BitLocker Loader for Linux is a command line tool to encrypt USB flash drive or external hard drive with BitLocker, mount BitLocker encrypted drive in read-write mode.

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