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.)
Best Answer
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.