uefi boot on Apple Mac

[Anders Bolt-Evensen]

I also got a message like that when I booted from a USB stick on a 
MacBookPro8,3 (17 inch, late 2011).

I fixed it by creating a custom ISO image and burned that onto a DVD 
using an external DVD drive.
The UEFI installer boots fine from this external DVD drive.

Here is how I did it:

Genereste an ISO with the FreeBSD-CURRENT kernel, mount the ISO and copy 
all files from the root directory in the ISO and unmount
     > cd /usr/src/release
     > sh ./generate-release.sh # You may have to run “make buildworld” 
and be connected to the internet to install required ports.
     > mount -t cd9660 /scratch/R/release/FreeBSD-something-disc1.iso /mnt
     > mkdir freebsd_generic_installer
     #Files copied to the directory in the next command will be copied 
to a new ISO in step 3
     > cp -R /mnt/ freebsd_generic_installer/
     > umount /mnt
2. Create a FAT filesystem image and place the loader in it in the 
default path that UEFI will look for (the following steps are copied 
from https://wiki.freebsd.org/UEFI#CD.2FDVD_Boot_under_UEFI):
     > dd if=/dev/zero of=efiboot.img bs=4k count=100
     > mdconfig -a -t vnode -f efiboot.img
     > newfs_msdos -F 12 -m 0xf8 /dev/md0
     > mount -t msdosfs /dev/md0 /mnt
     > mkdir -p /mnt/efi/boot
     > cp loader.efi /mnt/efi/boot/bootx64.efi
     > umount /mnt
     > mdconfig -d -u 0

3. Create the custom ISO image. Please make sure that the entry in 
freebsd_generic_installer/etc/fstab matches the label you choose in the 
command below.
     > makefs -t cd9660 -o bootimage='i386;efiboot.img' -o no-emul-boot 
-o rockridge -o label=“FREEBSD_UEFI_INSTALL" -o publisher="test" 
uefi-test.iso freebsd_generic_installer/

To get the example in the command above to work, please make sure that 
the entry in freebsd_generic_installer/etc/fstab reads
"/dev/iso9660/FREEBSD_UEFI_INSTALL    /    cd9660    ro    0     0"

4. Burn the image to DVD, reboot your system and choose “EFI Boot”. Note 
that unless you are using a EFI console like rEFIt or rEFInd, you may 
have to kind of wait a couple of minutes while the kernel is loading 
before anything appears on the screen.


On 04/07/14 16:34, Huang Wen Hui wrote:
> Hi,
> On my MacbookPro11,3, I got this error message:
>
> http://sw.gddsn.org.cn/freebsd/uefi.jpg
>
> cheers,
>
> Huang WenHui
>
> 2014-07-04 22:13 GMT+08:00 Ed Maste <emaste at freebsd.org>:
>
>> On 24 May 2014 19:39, Rafael Espíndola <rafael.espindola at gmail.com> wrote:
>>> Yes, I got that in the mac laptops I tried, it worked on a Mac Pro. It
>>> might be the frame buffer corruption that Ed Maste was mentioning.
>> I purchased a new MacBook Air yesterday (model identifier
>> MacBookAir6,2).  UEFI boot and vt(4) worked correctly.  (My image
>> included Rafael's patch; I haven't tried a boot without.)
>>
>> I also committed a change to display the framebuffer parameters
>> (address, dimensions, etc.) on boot, in order to help identify the
>> source of this issue.  If you have a moment can you build a new USB
>> stick image and give it a try?
>>
>> -Ed
>>
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