You need to set the bootable flag in the protective MBR. I had to use gdisk and fdisk to make a partition that was bootable by Apple's EFI. The proper setting does not seem to exist in gdisk, even though gdisk can read it (oversight by the author?).
- [gentoo-user] MBR & GPT dual compliant format James
- Re: [gentoo-user] MBR & GPT dual compliant format R0b0t1
- Re: [gentoo-user] MBR & GPT dual compliant form... Neil Bothwick
- Re: [gentoo-user] MBR & GPT dual compliant ... R0b0t1
- [gentoo-user] Re: MBR & GPT dual compli... James
- Re: [gentoo-user] Re: MBR & GPT du... Neil Bothwick
- Re: [gentoo-user] Re: MBR & GP... David Haller
- Re: [gentoo-user] Re: MBR &... Neil Bothwick
- Re: [gentoo-user] Re: MBR &... Artur Zych
- Re: [gentoo-user] Re: MBR &... Tom H
- Re: [gentoo-user] Re: MBR &... Artur Zych
- Re: [gentoo-user] Re: MBR &... Tom H