I'm trying to boot off an SD card on a MacBook Pro 5,4. I can get into GRUB and boot the kernel but I get a panic when it tries to find the root file system.
For some reason, no matter what option I choose to compile the kernel, it will not recognize the SD card, but the Gentoo minimal install CD has no problems whatsoever, that's how I installed it onto the SD card in the first place.
I'm using a EFI GRUB2 setup properly.
I followed this guide, and it didn't work. I chose Y, not M. So compiling into the kernel, not as a module.
Also, I can boot OpenBSD off the same SD card on the same laptop and it works great.
If anyone knows the options I need to enable or anyone who has done this before if you could help me it would be great.
LSUSB says the model is,
05ac:8403 Apple, Inc Internal Memory Card Reader.