I recently installed ubuntu on my macbook pro. I am using rEFInd to dual boot ubuntu. Following the installation, I tried to encrypt my Macintosh HD partition by first converting the disk to core storage. I received the following error message:

Error: -69730: Unable to create boot loader partition due to the specifics of your partition map layout

I was using FileVault for whole disk encryption before partitioning my hard drive in order to install Ubuntu. Is there any way to correct this error, or another method to encrypt my hard drive?

I am dual booting Ubuntu 16.04 on my 13 inch Macbook Pro from mid 2014 running El Capitan. This is what my partition lay-out looks like:

  • It would help if you would include the year/screen size of your Mac. Basically, what is shown on the pop up window when you select "About this Mac" from the menu bar. Also include the exact name of the Ubuntu file you downloaded. The image you posted does not contain any Linux partitions. To what partition did you install rEFInd? What version of OS X are you using? May 15, 2016 at 20:47
  • I just edited the question to include some of these details. My computer is a mid 2014 13 inch Macbook Pro running El Capitan. I installed rEFInd to Ubuntu on disk0s4. I copied the Ubuntu disk image (ubuntu-16.04-desktop-amd64.iso) to a flash drive to install it. I used this as a guide: youtube.com/watch?v=3pdW4DAvJDM. May 17, 2016 at 0:49

1 Answer 1


If you encrypt the OS X partition only.

  • I was trying to encrypt only the OS X partition when the error message appeared. Is there another way to do this? May 15, 2016 at 19:04
  • what is the code or error message?
    – Alex
    May 15, 2016 at 19:08
  • I tried to convert my OS X partition to core storage in order to encrypt it and received this message: Error: -69730: Unable to create boot loader partition due to the specifics of your partition map layout. I've added a photo of my partition layout to the original question if it helps. May 15, 2016 at 19:11
  • Are you booting windows or Linux with rEFInd?
    – Alex
    May 15, 2016 at 19:15
  • I'm booting Linux. May 15, 2016 at 19:16

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