Not adding anything here but, this is something users ask everynow and then
on different forums.

It would be awesome if the wiki contained a guide on how to set-up a
dualboot, Windows/NetBSD and Linux/NetBSD. Including seting up rEFInd would
be the icing on the cake.

Happy new year.


Den ons 29 dec. 2021 21:28Todd Gruhn <tgru...@gmail.com> skrev:

> My system wa built a year ago. I boot NetBSD from one HD.
> I boot Windoze from another HD.
> It also allows me to boot either of 2 CD/DVDs.
>
> The 2 CDs come in handy when upgrading NetBSD.
>
> I can choose which device to boot when UEFI comes up.
>
> On Wed, Dec 29, 2021 at 6:19 PM Chavdar Ivanov <ci4...@gmail.com> wrote:
> >
> > I boot my netbsd-current system in uefi mode from the second disk by
> selecting its .efi file; I lost my default rEFInd setup when I downgraded
> the first disk from W11 to W10 and haven’t tried to recover it yet, it also
> can be started by selecting its .efi file. I have never copied the system
> kernel on the efi partition; there are three systems on the second disk
> with their own efi partitions. This is on an HP envy 17 laptop, 5 years old.
> >
> > On Wed, 29 Dec 2021 at 17:19, Tobias Nygren <t...@netbsd.org> wrote:
> >>
> >> On Wed, 29 Dec 2021 17:05:08 +0000 (UTC)
> >> Benny Siegert <bsieg...@gmail.com> wrote:
> >>
> >> > Hi!
> >> >
> >> > I re-installed Windows 10 on my machine, and it insisted on UEFI boot,
> >> > which killed my previous dual-booting setup with GRUB and legacy boot.
> >> >
> >> > NetBSD is on the second NVMe drive, while the first one is all
> Windows.
> >> >
> >> > After installing Windows, I manually installed rEFInd into the EFI
> >> > partition. For NetBSD, I copied bootx64.efi to /EFI/NetBSD (so as not
> to
> >> > overwrite the existing /EFI/Boot/bootx64.efi, which I assume is from
> >> > Windows). I also copied a GENERIC NetBSD-9.2 kernel to  /netbsd.gz on
> the
> >> > EFI partition.
> >> >
> >> > After selecting NetBSD in rEFInd (which it auto-detects), I see the
> >> > NetBSD/x86 EFI boot (x64) banner. It proceeds to load a kernel from
> >> > "NAME=EFI system partition:netbsd.gz (howto 0x20000)".
> >> >
> >> > Unfortunately, after the initial loader line with the sizes, the boot
> >> > seems to hang with no further output.
> >> >
> >> > Any ideas, hints or tips?
> >>
> >> I have a similar problem when I have a 4k sector NVMe drive installed.
> >> I suspect in my case it is a Dell firmware bug but not sure.
> >> It hangs for me when tearing down UEFI stuff before jumping to kernel.
> >>
> >> To rule out issues with the EFI system partition itself you could
> >> install a /EFI/NetBSD/boot.cfg to instruct bootx64.efi to load the
> >> kernel from hd1a:netbsd or whatever your FFS partition is named.
> >>
> >> -Tobias
> >
> > --
> > ----
>

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