On 5/1/19 2:48 PM, ToddAndMargo via users wrote:
Hi All,
I have a Fedora 30 flash drive set up for dual booting
from Legacy or UEFI. It boots beautifully from UEFI.
(It also have a bios_grub partition).
It booted perfectly from both under Fedora 29.
Now when booting from legacy, it go into "System Setup".
If you press system Setup, I get a "/grub/core-system"
type error
The exact message, which only appears for five second and
then goes back to system setup is
error: ../../grub-core/script/function.c:109can't find commadn
`fwsetup`
"fwsetup" is used by the EFI boot and confirms that it is looking
for EFI
How do I get grub2-mkconfig to make me a legacy grub.cfg?
Remaking grub.cfg, I get
# grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
Adding boot menu entry for EFI firmware configuration
done
Uhhhhh.. I wanted legacy, not EFI.
What am I missing?
Many thanks,
-T
My procedure:
UEFI.BIOS.Dual.Boot.txt:
References that stink:
https://forums.linuxmint.com/viewtopic.php?t=223015
https://bl.ocks.org/gdamjan/05b799162e4b3e97a30d37a89fed0fa8
https://forum.level1techs.com/t/configure-grub-to-boot-legacy-and-uefi/129382
Requirements:
Fedora 29
Before installing, gparted:
Wipe the target disk
create a partition table as GPT
create a first partition as
1 Meg
unformatted
set the partition flag to "bios_grub"
Install Fedora 29 from a UEFI machine:
"/home" was removed at installation and moved into "/"
--->>> PRESUMED !!! <<<---
The machine was install and booted from UEFI
The machine is mounted as /dev/sda
Install the legacy BIOS boot loader:
Boot into fedora on UEFI
only installs 3 files
# dnf reinstall grub2-pc
create the BIOS .cfg file
# grub2-mkconfig -o /boot/grub2/grub.cfg
Note: if this complains, you forgot to create the partition above
# grub2-install --removable --recheck --target=i386-pc
--boot-directory=/boot /dev/sda
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