On Fri, Oct 2, 2009 at 2:29 AM, Michal Suchanek <hramr...@centrum.cz> wrote: > 2009/10/1 Bean <bean12...@gmail.com>: >> On Thu, Oct 1, 2009 at 11:17 PM, Michal Suchanek <hramr...@centrum.cz> wrote: >>> Hello >>> >>> Is there a way to reproducibly create Grub bootable media (CD, USB >>> stick) that can be used with Apple efi? >>> >>> I tried some ways of blessing the boot loader which I found on the net >>> but none works. >> >> Hi, >> >> You should format it as GPT, MBR may not work. The fs of choice is >> hfsplus, although I heard someone have successful boot with FAT. >> >> To bless the disk, use something like this: (only available for hfsplus) >> >> sudo bless --folder=/Volumes/USBDISK >> --file=/Volumes/USBDISK/efi/grub/grub.efi > > That's what I use and what can be found on varoius forums and wikis. > > It works neither with rEFIt nor grub for me. Perhaps I am not using > the = character, I should check that but bless does not report any > error and it actually changes the information (there is another bless > option to show the state). > >> >> bless writes the location of boot file to the hfsplus header. bless >> doesn't work on FAT. >> >> At startup, you need to press the Option key to show startup disk, and >> select the usb disk. > > The disk does not show in the options offered by the firmware. >
Hi, Oh, perhaps some model doesn't support the usb boot method. >> >> The following command writes the boot device to nvram so that it's >> used by default: >> >> sudo bless --folder=/Volumes/USBDISK >> --file=/Volumes/USBDISK/efi/grub/grub.efi --setBoot > > As I understand it this is not required for hfsplus, only for fat > which cannot be blessed permanently. > It makes no difference either way. Each partition has a default boot file, but the default boot device is stored in the nvram. --setBoot sets this value. This is the same as selecting the boot device from Startup Disk. Although if firmware can't boot from usb, setting this would have any effects. > >> >>> >>> Also the default core image probably lacks some essential parts. I >>> managed to load it as rEFIt shell command by placing it in the tools >>> directory but it complained about "prefix" not being defined and I >>> seemingly had no commands - the help command was not available, and >>> pressing tab did not show anything. >> >> You can add the command to the generated EFI image with grub-mkimage, >> here are the list of modules I usually use: >> >> ./grub-mkimage -d . -o grub64.efi minicmd part_gpt part_msdos >> part_apple fat ext2 hfsplus hfs ntfs reiserfs xfs iso9660 udf ls >> search loopback linux chain reboot halt appleldr help configfile >> hexdump loadbios memrw fixvideo crc sh video efi_fb gfxterm font png >> coreui loadcfg menutest gfxmenu textmenu > > Hmm, I'm probably missing the shell or something. Can't the > installation pre-create an efi image that contains most options? AFAIK > the size of the image is not of much concern on efi so creating a > mostly complete image would simplify things. The above list contain most of the things I need, although you can use *.mod to include all modules, but I think some have unresolved symbol issue and you can get an error. -- Bean gitgrub home: http://github.com/grub/grub/ my fork page: http://github.com/bean123/grub/ _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org http://lists.gnu.org/mailman/listinfo/grub-devel
