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macrumors regular
Original poster
Jan 5, 2015
Los Angeles
DiskWarrior 5.2 Update Mojave Compatible out now.

From Alsoft:

1) DiskWarrior 5.2 is compatible with macOS 10.14 Mojave.
2) Mac OS Extended (HFS Plus) disks can be rebuilt as before.
3) The internal drives of Macs are automatically converted from Mac OS Extended (HFS Plus) to Apple File System (APFS) when upgrading to macOS 10.14 Mojave.
4) Apple File System (APFS) disks are recognized by DiskWarrior 5.2 but are not able to be rebuilt. Click here to learn how to identify an APFS disk.
5) DiskWarrior 5.2 now runs within the macOS 10.14 Mojave Recovery environment.
6) The Preview application in DiskWarrior can now copy files to APFS disks when recovering data from a failing Mac OS Extended (HFS Plus) disk.
7) Numerous minor updates were made to accommodate additional security measures in macOS 10.14 Mojave.

The following applies only when running an installed copy of DiskWarrior and not when booted from the DiskWarrior flash drive or macOS Recovery.

8) Due to the ever enhancing security of macOS you might need to first "Allow" the system extension portion of DiskWarrior to be loaded on your Mac. The first time you launch DiskWarrior 5.2, the system extension might be blocked. You will only need to allow the system extension once.

Follow the instructions in the System Extension Blocked message to allow the DiskWarrior system extension software to be loaded. Open the Security & Privacy System Preference and click the lock and then click the Allow button.

Quit DiskWarrior, reboot your Mac and launch DiskWarrior again.

Using DiskWarrior Recovery Maker 1.3.
• What you need to know
1) DiskWarrior Recovery Maker 1.3 is compatible with macOS 10.14 Mojave. You will need DiskWarrior 5.2 to run DiskWarrior from a recovery flash drive created while running macOS 10.14 Mojave. Creating a 10.14 recovery flash drive will not allow DiskWarrior to rebuild APFS disks.

2) You need to take an extra step to create a DiskWarrior startup recovery flash drive on an iMac Pro or a mid-2018 MacBook Pro. Those 2 Macs are equipped with Secure Boot. By default, Secure Boot does not allow starting up from an external disk such as a DiskWarrior recovery flash drive. Also by default, Secure Boot prevents the creation of a macOS startup disk except for those created using Apple's Installer.

To create and use a DiskWarrior Recovery disk for Macs with Secure Boot, it will be necessary to change the default Secure Boot and External Boot settings using the Startup Security Utility. The Secure Boot setting will need to be changed to Medium Security or No Security. Alsoft recommends Medium Security. Additionally, the External Boot setting will need to be changed to Allow booting from external media.

Please follow the instructions found on Apple's web site using the following link to make the needed changes.

About Secure Boot
Notice: Creation of, or start up from, a DiskWarrior recovery flash drive will fail if the above steps are not taken.

What's in the works
The next major release of DiskWarrior will include the ability to rebuild APFS disks. Apple has recently released the APFS format documentation. Our developers are now using that documentation to update DiskWarrior to be able to safely rebuild APFS disks.


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macrumors 6502
Apr 9, 2003
Is there still great value in DiskWarrior these days? Used to be a great utility but not sure anymore.


macrumors 68020
Nov 3, 2004
Is there still great value in DiskWarrior these days? Used to be a great utility but not sure anymore.

As long as you aren't using Apple's beta-quality filesystem, it has the same value it has always had. I understand that Mojave does not allow the automatic APFS conversion to be blocked.
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