How to convert an MBR partition table to GUID on a Mac

Publish date: 2024-06-24

If you own a Mac PC, then you should know that whenever you need to install your OS, your main partition needs to pe GUID (or GPR), and not MBR which is primarily specific to Windows.

Of course, there are situations when you need to convert from MBR to GPR.  These situations include:

Because of this, we’ve decided to make a step-by-step guide on how you can convert an MBR partition to a GUID on a Mac device.

How do I convert my MBR partition to GPR?

1. Use the Disk Utility tool

  • Boot from your OS X Installer Disc.
  • Choose your language and click on Continue. A menu bar should appear.
  • Go to the Utilities menu.
  • Select Disk Utility.mac disk utility
  • When the Disk Utility loads select your hard drive.
  • Under the Volume Scheme heading set the number of partitions to one.
  • Click Options.
  • Set the partition scheme to GUID.
  • Click OK.
  • Set the format type to Mac OS Extended (Journaled).
  • Click on the Partition button.
  • Wait for the process to run its course.
  • Select the freshly created volume.
  • Click on the Erase tab.
  • Set the format type to Mac OS Extended (Journaled) .
  • Click on Security.
  • Check the button for Zero Data.
  • Click on OK to return to the Erase window.
  • Click on Erase .
  • Wait for the process to run its course.

    • 2. Use a third-party tool

    When you want to get the job done quicker and not waste too much time on this, using a dedicated third-party tool is the most convenient solution.

    Paragon’s Hard Disk Manager for Mac is an excellent choice to manage your Mac’s disk partitions.

    With a simple-to-use interface, Paragon provides powerful solutions to backup, resegment, wipe your disk. Recovering deleted or lost files is also possible with just a few clicks.

    Converting and redistributing the unused space between the partitions is among the most used tool option and you will be able to fully benefit from it.

    ⇒ Get Paragon Hard Disk Manager for Mac

    By following these steps you should now have converted an MBR drive to a GUID (GPR) drive without any issues.

    Note icon
    NOTE

    This procedure involves erasing your partition. Backing up your data is recommended.

    You can reverse the changes at any time by following the steps mentioned above, only this time you select MBR instead of GUID.

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