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
> >> >
> >> Current is 2.02~beta2.

I tried 2.02~beta2 and no matter what I do, I end up at the grub prompt with
the message:

Error: no server is specified

..seems like a bug?

> >> >> > The bios boot works fine
> >> >> > On two different machines, the uefi boot gets to the grub menu
list:
>
> I say that you should be using grub-mkrescue command. This is supported
tool to build bootable standalone hybrid ISO image that can > be used to
boot both from CD as well as USB (although to boot from USB in case of EFI
you probably need recent fix). This command > > builds correct image and
allows you to add arbitrary files to it, including grub.cfg, kernels and
such. It needs xorrisofs and in case of EFI > - mtools (mformat/mcopy).
>
OK, but I'm trying to make an iso that is bootable both by legacy BIOS and
UEFI, the above doesn't sound like it will do this?

> grub-mkimage is low level tool which is almost never correct way unless
you have very specific requirements not covered by standard > utilities.