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On Wed, Dec 05, 2018 at 10:30:00PM +0000, Doesnt Work wrote:
> I'm pretty sure I'm missing something.
> 
> To take advantage of 3D acceleration in Windows, either insecure QEMU in
> dom0 or dualbooting, I need to edit grub-files.
> 
> However, they seem to be gone from dom0. I would expect a grub.cfg
> somewhere in /boot and a /etc/grub.d/ folder in dom0. Does qubes4 use a
> different bootloader or is grub written to another volume?
> If different bootloader, is dualbooting Windows at all possible?
> If another volume, how can I access it?

This probably means you have UEFI, where there is no grub at all.
Windows also support UEFI, so as long as you don't erase Windows
partition during Qubes installation (or the other way around), you
should end up with "Windows" and "Qubes" entries in BIOS/UEFI boot menu
and no additional configuration is needed.
If your UEFI firmware does not provide boot menu (that would be
weird...), you'll need to install some boot loader, but grub-efi don't
play nice with xen.efi, so either choose another one (rEFInd?) or switch
boot to legacy mode, where you can use grub.

> Since googling didn't yield results, pointers to relevant documentation
> would be appreciated as well.

Some info is here:
https://www.qubes-os.org/doc/uefi-troubleshooting/
but it's mostly focused about installer image, not the installed system.

- -- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
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