You plug a drive from a Windows PC into your MacBook or iMac, and macOS says the disk isn't readable. If that drive was encrypted with BitLocker, this is expected: macOS has no built-in support for BitLocker, so you cannot access a BitLocker drive on a Mac by simply opening it in Finder.
Here comes the good news. If you have the BitLocker password or the 48-digit recovery key, there are four reliable ways to unlock the drive and get to your data. This guide walks through each one, compares them, and shows how to read and write files on the drive once it is unlocked.
Why a Mac Cannot Open a BitLocker Drive
BitLocker is Microsoft's drive encryption feature for Windows. Apple uses a separate technology called FileVault, and macOS does not include the code needed to unlock a BitLocker volume. When you connect a BitLocker-encrypted drive, the Mac sees a volume it cannot interpret and shows the message "The disk you attached was not readable by this computer."
An ordinary NTFS drive without BitLocker can be read by a Mac (but not written to by default). A BitLocker drive adds an encryption layer on top, so it has to be unlocked first before any file can be seen. Every method in this article is a different way to do that unlocking step.
What You Need Before You Begin
• The BitLocker password or the 48-digit recovery key. Without one of these, the drive cannot be opened.
• A backup plan. If the files are significant, it is recommended to keep a backup in your Windows computer in advance.
• A working cable and port. It is necessary to get an original cable to connect the drive to your Mac port.
If you don’t know where the recovery key is saved, check the below places:
• The Microsoft account used on the Windows PC that encrypted the drive (check the recovery key page after signing in).
• A work or school account, if the PC was managed by an organization.
• A printout or a text file that was saved to a USB drive when BitLocker was turned on.
Method 1: Use a Windows Virtual Machine on Your Mac
If you do not have a separate PC, you can run Windows inside macOS with virtualization software such as Parallels Desktop, VMware Fusion, or UTM. The virtual machine can access a USB drive directly, so you unlock it the same way as on a real PC.
Step 1: Install virtualization software and set up a Windows virtual machine.
Step 2: Connect the BitLocker drive to your Mac, then attach it to the virtual machine through the USB device menu (instead of letting macOS handle it).
Step 3: In Windows, open the drive and enter the password or recovery key.
Step 4: Copy files to a shared folder that the virtual machine shares with macOS, or to a second unencrypted drive.
Best for: occasional use if you already have a Windows virtual machine.
Limitation: setup takes time, and you need a Windows license plus virtualization software, which may involve cost. Boot Camp is another option, but it only exists on older Intel-based Macs.
Method 2: Use macFUSE and dislocker (Free, Advanced)
The open-source tool dislocker can decrypt BitLocker volumes on non-Windows systems when paired with macFUSE, a file system extension for macOS. It is free, but it is a command-line approach.
• You install macFUSE and approve its system extension in macOS security settings. On Apple silicon Macs this may require changing startup security settings.
• You install and run dislocker in Terminal, supplying the password or recovery key, then mount the decrypted result.
• Write support is limited and less reliable than read access, so keep a backup before changing anything on the drive.
Best for: technical users who are comfortable with Terminal.
Limitation: installation steps change with macOS versions, and there is no graphical interface or official support.
Method 3: Use iSunshare BitLocker Genius for Mac
If you want to skip Windows entirely, a dedicated Mac tool is the most direct route. iSunshare BitLocker Genius for Mac lets you unlock a BitLocker-encrypted drive on your Mac with either the open password or the recovery key. After the drive is unlocked and mounted, you can read it and transfer files and folders between the BitLocker drive and your Mac.
Step 1: Download and install iSunshare BitLocker Genius for Mac from the official iSunshare website.
Step 2: Connect the BitLocker-encrypted drive to your Mac. If macOS shows the "disk not readable" message, click Ignore.
Step 3: Open BitLocker Genius for Mac. The program lists the BitLocker drive that it detects. Choose the option to unlock the drive, then enter the password, or select the recovery key option if you have lost the password.
Step 4: After unlocking, the drive is mounted on your Mac. You can access it directly and copy, read, and write the content if needed.
Step 5: When you are finished, eject the drive from Finder before unplugging it to avoid data corruption.
Good to know
BitLocker Genius for Mac unlocks drives for people who already have valid credentials. It does not remove BitLocker protection from a drive when you have neither the password nor the recovery key.
Best for: anyone who regularly moves files between a Mac and BitLocker drives and wants read and write access without Windows.
Limitation: it is paid software, so it makes the most sense if you need this more than once.
FAQs on Opening BitLocker Drive on Mac
Q1: Can a Mac read a BitLocker-encrypted drive?
Not natively. macOS cannot unlock BitLocker volumes on its own, so a BitLocker drive appears as unreadable or asks to be initialized. You need a third-party tool to build the connection between the BitLocker-encrypted drive and your Mac.
Q2: Do I need a password or recovery key to open a BitLocker drive on Mac?
Yes. Every method requires either the BitLocker password or the 48-digit recovery key. BitLocker cannot be opened without valid credentials, and no Mac tool changes that.
Q3: Is there a free way to access a BitLocker drive on a Mac?
Yes, but it takes more effort. You can unlock the drive on a Windows computer and copy the files out, or use the open-source dislocker utility with macFUSE, which is command-line based and best suited to advanced users.
Q4: Can I write to a BitLocker drive on Mac, not just read it?
It depends on the method. A Windows PC or Windows virtual machine gives full read and write access. Dedicated Mac tools such as iSunshare BitLocker Genius for Mac let you read, copy, and write files after the drive is unlocked.
Q5: Does this work for BitLocker To Go USB drives and SD cards?
In general, yes. BitLocker To Go uses the same password or recovery key unlock process, so the same methods apply to removable drives. Check your chosen tool for its list of supported drive types and file systems.
Q6: Will opening a BitLocker drive on Mac erase my data?
Not if you unlock it properly. The risk comes from clicking Initialize or Erase when macOS says the disk is unreadable. Choose Ignore instead, and keep a backup of important files before you start.
Conclusion
You cannot directly open BitLocker drive on Mac. But there are ways to reach your BitLocker encrypted data. With the password or recovery key, you can unlock the drive on a Windows PC-- a virtual machine, with free command-line tools, or directly on macOS with a dedicated app.
If you want the quickest route without Windows, iSunshare BitLocker Genius for Mac lets you unlock a BitLocker drive with a password or recovery key and then read and write files straight from your Mac. Whichever method you pick, keep a backup of important files and eject the drive properly each time.
Related Articles:
- How to Open a BitLocker Drive on Windows 11/10 Home
- Can I Open/Unlock BitLocker Encrypted Drive in a Different Computer
- Access BitLocker Encrypted Drive on another PC and Mac
- How to Read a USB Flash Drive Encrypted with BitLocker on Mac
