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Re: How to boot in UEFI mode: practically no documentation
On Tue, May 29, 2018 at 08:15:43AM +0000, Thomas Mueller wrote:
> Where do I find documentation on how to boot NetBSD amd64 or possibly i386 in UEFI mode?
I'm working on a wiki page (and will change the NetBSD 8.0 install docs
to point to that).
I can't answer how to boot into alternative operating systems (haven't tried
that yet). But the basic installation goes like this:
- You want to boot from the uefi usb install image. This requires "secure
boot" to be disabled. Some firmwares require you to set a firmware
password before allowing to disable that
Assuming you have a scratch disk (called wd0) you want to fully use for NetBSD you
do something like:
gpt destroy wd0
gpt create wd0
gpt add -a 2m -l "EFI system" -t efi -s 128m wd0
gpt add -a 2m -l NetBSD -t ffs -s 118g wd0 # replace 118g as needed
gpt add -a 2m -l swap -t swap wd0 # this will use all remaining space
dkctl wd0 listwedges
Now note which dk* is the EFI one and newfs it (also note the ffs one
for later, see below):
newfs_msdos /dev/rdk3 # replace dk3 with proper device
Then make it bootable:
mount -t msdos /dev/dk3 /mnt
mkdir -p /mnt/EFI/boot
cp /usr/mdec/*.efi /mnt/EFI/boot
I have sysinst changes that will allow the remaining part to be handled
by sysinst in NetBSD 8.0 (hope to finsih that soon).
But for now you will have to install manually. Check the dkctl output
for which dk* is the ffs one and newfs/mount it:
newfs -O 2 dk4 # replace dk4 by approrpiate device, see above
mount -o async /dev/dk4 /mnt
Now extract (with tar xpzf) all sets you want, including the appropriate
cp /usr/mdec/boot . # copy secondary bootloader (XXX is this needed for uefi)?
sh MAKEDEV all
A fstab could look like:
NAME=NetBSD / ffs rw 1 1
NAME=swap none swap sw,dp 0 0
kernfs /kern kernfs rw
ptyfs /dev/pts ptyfs rw
procfs /proc procfs rw
tmpfs /var/shm tmpfs rw,-m1777,-sram%25
Finally set rc_configured=YES in /mnt/etc/rc.conf, plus add hostname=
and whatever settings you need.
Now reboot, remove install usb medium, and watch NetBSD boot from uefi.
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