RE: Cannot boot from dual bios/uefi boot CD

[John Frankish]

> > On Wed, Jan 28, 2015 at 10:30 AM, John Frankish
<address@hidden> wrote:
> > Hi,
> >
> > I'm trying the create a dual bios/uefi boot iso to burn to CD/DVD and 
> > boot both bios and uefi.
> >
>
> And your grub version is?
>
2.00

> > The bios boot works fine
> > On two different machines, the uefi boot gets to the grub menu list:
> >
> > On a dell laptop choosing the grub menu item boots to the linux 
> > console prompt, but will not accept any keyboard input
> > On a mac mini the boot hangs without error message after choosing the
grub menu 
> > item.
> >
> > Note that in both cases, I can enter grub commands from the prompt and 
> > can also edit the grub menu entries.
>
> And it boots after that?

No, on the laptop it boots to the console prompt, but does not accept
keyboard input

> >  In addition, both the bios and uefi boot are using the same vmlinuz and
initrd files. 
> > Finally a more standard uefi installation to usb stick boots on both
machines without problems.
> >
>
> I'm afraid I do not quite understand that. Could you be more verbose
>
> - what "standard uefi installation to usb stick" means?
The grub modules are in /EFI/BOOT/grub/X86_64 rather than embedded in
BOOTX64.EFI

> - do you use exactly the same kernel/initrd in both cases (CD and USB)?
Yes

> - do you use exactly the same kernel options in both cases?
Yes

> - where is kernel/initrd located in both case (boot media - CD/USB?
> External HDD? Anywhere else)?
/boot on both the CD and HDD

> - what happens if you do not use gfxterm and use pure console?
I didn't try this as the idea is to use gfxterm with Xfbdev to get the
native laptop screen resolution,
But I will try and report back

> In any case testing with current grub2 git master is always recommended.
Really? OK, I'll try that.

> > I'd appreciate any help and/or suggestions as to why this doesn't work 
> > - details below.
> >
> > Regards
> > John
> >
> > The iso was created as follows:
> >
> > $ x86_64-grub-mkimage --format=x86_64-efi --output=BOOTX64.EFI 
> > --prefix=/EFI/BOOT/grub --config=/tmp/grub.cfg acpi ahci all_video 
> > appleldr at_keyboard bitmap_scale ata boot cat chain configfile cs5536 
> > echo efi_gop efi_uga ehci ext2 fat font gfxmenu gfxterm gzio halt help 
> > hfs hfsplus iso9660 jpeg keylayouts linux loadbios loadenv ls minicmd
normal ohci 
> > part_gpt part_msdos png probe regexp reboot search search_fs_file 
> > search_fs_uuid search_label test tga true udf ufs1 ufs2 uhci 
> > usb_keyboard zfs.
> >
> > Where /tmp/grub.cfg is:
> > search.fs_label CorePure64 root
> > set prefix=($root)/EFI/BOOT/grub
> >
> > efiboot.img created as follows:
> >
> > $ dd if=/dev/zero of=efiboot.img bs=1K count=1440
> > $ mkdosfs -F 12  efiboot.img
> > $ mkdir /tmp/image
> > $ sudo mount efiboot.img /tmp/image
> > $ sudo mkdir -p /tmp/image/EFI/BOOT
> > $ sudo cp BOOTX64.EFI /tmp/image/EFI/BOOT $ sudo umount /tmp/image
> >
> > And copied to the iso file structure as follows:
> >
> > /EFI/BOOT/efiboot.img
> > /EFI/BOOT/grub/grub.cfg
> > /EFI/BOOT/grub/fonts/unicode.pf2
> >
> > Where grub.cfg is:
> >
> > loadfont unicode
> > set gfxmode=auto
> > insmod efi_gop
> > insmod efi_uga
> > insmod gfxterm
> > terminal_output gfxterm
> >
> > menuentry "corepure64" {
> > linux /boot/vmlinuz64 loglevel=3
> > initrd /boot/corepure64.gz
> > }
> >
> > And finally the iso is created as follows:
> >
> > $ sudo mkisofs -pad -l -r -J -V CorePure64 -no-emul-boot 
> > -boot-load-size 4 -boot-info-table -b boot/isolinux/isolinux.bin -c 
> > boot/isolinux/boot.cat -hide-rr-moved -eltorito-alt-boot 
> > -eltorito-platform efi -b EFI/BOOT/efiboot.img -no-emul-boot -o 
> > CorePure64-6.0.iso /tmp/pkg
> >