I bought a 64GB Sandisk for my GoPro Hero 3+ and it works fine.

However, when I either plug in my GoPro directly via a USB cable or try to access the drive by using an SD-card adapter, all that comes up is

The disk you inserted was not readable by this computer.

The options presented are Initialise, Ignore and Eject. When I select Initialise it comes up with a program I have never used or seen before.

I am not very good with computers so any help is great! I have recently had my laptop updated but I am not sure which update it has.

(My laptop reads other cards and this card works on a Windows computer.)

1 Answer 1


The HERO3+ camera uses the exFAT file system format and it should be readable on your Mac if it uses Mac OS X from Snow Leopard on up. The link above notes that if you are having difficulty using a 64GB card, that you can use a 32GB or smaller card and format it with the old FAT32 standard.

  • Thanks for your help, i have had a look at the link above and my Mac has Mavericks so i don't think it is compatible. Any suggestions in how i can make it work?
    – CaseyD
    Oct 7, 2014 at 22:36
  • Problem sovled, very happy.
    – CaseyD
    Oct 8, 2014 at 5:39
  • 2
    Please mark my answer as the solution, please, if the problem has been solved.
    – IconDaemon
    Oct 8, 2014 at 11:27

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