UEFI dual boot

Zaphod Beeblebrox zbeeble at gmail.com
Mon Jun 1 13:53:41 UTC 2020


I find "rEFInd" (http://www.rodsbooks.com/refind/) to be a reasonable tool
for this.  In the windows EFI partition, you can drop the refined install
and then add boot.efi from freebsd.  If you tell EFI bios to pick up
rEFInd's .efi, it will display a graphical or text menu with all the other
.EFI choices.

If your FreeBSD is already booting by EFI, then you can just move that
partition onto the new disk.  If not, leave a partition available when
installing windows.

FreeBSD also has loader.EFI.  I have found some systems where boot.efi
doesn't determine the resolution correctly.  To use loader.efi, you need an
efi partition large enough to hold /boot/kernel --- but it does work well.

On Mon, Jun 1, 2020 at 9:36 AM Wojciech Puchar <wojtek at puchar.net> wrote:

> i have to install windows shit on separate partition to use it when
> someone really want me to use some video chats or other nonsense that
> doesn't work otherwise.
> In Virtualbox sound doesn't work properly and i have no idea why.
>
> Could anyone point me how to make a boot menu or something like that after
> i will:
>
> 1) clean whole disk
> 2) install UEFI windows but without allocating whole disk for it
> 3) install UEFI FreeBSD - how no problem in that.
>
> then i would be able to select what to boot by entering UEFI shell and
> manually selecting proper loader.
>
> How can it be made better
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