macOS
How do I clone a Mac to a new SSD without losing FileVault?
Quick answer
Use Carbon Copy Cloner or SuperDuper to clone your Mac while logged in, ensuring FileVault is unlocked. After cloning, enable FileVault on the new SSD through System Settings.
To clone a Mac to a new SSD without losing FileVault, use a cloning tool that supports APFS volumes while the system is unlocked. After cloning, re-enable FileVault on the new drive.
Steps
- 1
Prepare the New SSD
Connect the new SSD using a USB-C/Thunderbolt enclosure. Use Disk Utility to format it as APFS with a GUID partition map.
- 2
Clone the Mac
Log in to your Mac to ensure FileVault is unlocked. Use Carbon Copy Cloner or SuperDuper to clone the system volume to the new SSD, following the software's instructions for a bootable copy.
- 3
Test the Cloned SSD
Boot from the new SSD: on Apple silicon, hold the power button for startup options; on Intel, hold Option at boot. Verify that the system boots correctly and check FileVault status.
- 4
Enable FileVault on the New SSD
Once the clone is verified, go to System Settings → Privacy & Security → FileVault to enable encryption on the new SSD.
Internal vs. External SSD Options
Most modern Macs, especially those with Apple silicon, have non-removable internal SSDs. For these, cloning to an external SSD is the practical option. Older Intel Macs may allow internal SSD replacements.
Choosing the Right Cloning Software
Carbon Copy Cloner and SuperDuper are recommended for cloning APFS volumes. They ensure the system is copied in a bootable state and handle the complexities of macOS's signed system volumes.
FileVault Considerations
FileVault encrypts your data at rest. Cloning should be done while logged in to ensure the volume is decrypted. After cloning, FileVault must be re-enabled on the new SSD to maintain encryption.
Watch out for
- External booting on Apple silicon may depend on the enclosure and macOS version; test before erasing the internal drive.
- Ensure the new SSD is compatible with your Mac's hardware and macOS version.
FAQ
Will my FileVault recovery key transfer to the new SSD?
No, you will need to generate a new recovery key when you enable FileVault on the new SSD.
Can I use Disk Utility to clone my Mac?
Disk Utility can copy data, but for a bootable clone, use Carbon Copy Cloner or SuperDuper, which handle APFS and system volumes better.
What if my Mac has soldered storage?
For Macs with soldered storage, use an external SSD for cloning and booting, as internal upgrades are not possible.