Qubes OS boot menu not available anymore

[cosmin007]

hi
I’m using qubes os 4.2
As I’m having 2 disks and I need the gpu from the laptop I installed windows as well
but now, I can boot only on windows, qubes os menu not showing anymore.
what can i make to be able to boot in both?
thank you

[unscented_dish]

Did you install Windows before or after Qubes? What Windows version are you using?

[cosmin007]

I installed Windows 11 last time

[unscented_dish]

Try the following from within Windows 11:

1. Search for “Command Prompt” in the Start menu, right-click on it, and choose “Run as administrator.”
2. In the Command Prompt window, type the following command and press Enter: bcdedit /set {bootmgr} displaybootmenu yes
3. Reboot to check if Qubes is listed now

The steps are from the article below, in case you’re interested. They have a few more steps we can going to try if the above don’t work.

How to Fix Dual Boot Menu Not Showing in Windows 11 - GeekChamp

[cosmin007]

unfortunately this didn’t help.
on boot menu appears only windows 11
i know my hdd with qubes is fine as i booted from an usb with xubuntu and after decrypted the drive, everything was there

[OvalZero]

Did you try to reinitialize grub?

Stuck in Grub Recovery after installing Second OS to alternate Hard drive. How to recover?

Untested, assuming /dev/sda is your Qubes OS drive: cryptsetup luksOpen /dev/sda2 luks-qubes vgchange -ay mkdir /mnt/qubes mount /dev/qubes_dom0/root /mnt/qubes cd /mnt/qubes mount /dev/sda1 boot # Backup the /boot partition cp -r boot root/boot-backup mount -t proc /proc proc mount -t sysfs /sys sys mount --rbind /dev dev mount --rbind /run run chroot . grub-install /dev/sda After running grub2-mkconfig command below you only will be able to boot into Qubes OS. If you want to be able to boot…

[cosmin007]

Grub install command doesn’t found modinfo.sh file.
Tried searching for it and it is not there

Inside boot folder i have
EFI/(BOOT|Microsoft|qubes) folders

LE
Found the file in /…/i386-pc/ but I’m receiving this error

Installing for i386-pc platform.
grub2-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible.
grub2-install: warning: Embedding is not possible.  GRUB can only be installed in this setup by using blocklists.  However, blocklists are UNRELIABLE and their use is discouraged..
grub2-install: error: will not proceed with blocklists.

[cosmin007]

I completely destroy my boot partition after changed some flags based on what founded on internet

I’ll need to recreate it completely
Any advice? (I already formated the partition as wasn’t able to work with it anymore at all )

[OvalZero]

Sh** happens. I’ve never had to do this (and I’d prefer to start from scratch with backups – do you have any?), but searching the forums returns this topic (among others):

Rescue Re-Install the EFI and Boot Grub initramfs Partitions

Maybe it was your dual boot. Made a mistake with GPU passthru. Or killed an update in progress. There’s a dozen ways to bork your boot. I see a lot of people asking, HOW DO I REGENERATE MY EFI AND/OR BOOT PARTITIONS?? You’ve searched. You’ve read the threads. You tried some commands, but whatever you did just made it worse. And no amount of reading or re-reading is getting you closer to your goal. I’ve done this dance many times, each time resolving that I’ll finally figure it out, rather tha…

Look out for more (upper right — magnifier symbol)!

[cosmin007]

No i don’t have backups

I reinstalled windows now trying to add qubes back to live

[OvalZero]

Please do some backups. It’s really easy and gives peace of mind.

the goal: 3 copies on 2 different media types with 1 of the three being an offsite copy.

But any backup (as long as you tested that it’s working) is better than none.

[cosmin007]

Offtopic: Its a WIP with backing up the OS (everything else is backup - 2 local copies … WIP to have one online wuth cryptomator encrypting everything)

But I’d love to resolve the problem w/o reinstall

So the disk where qubes is installed has not been touch.
Grub is there but windows seems ignores it and sees only its

[cosmin007]

I reinstalled qubes but still I’m stuck with windows only. Cannot boot into qubes after installed windows 11 anymore

What I’m having/had

• I used Qubes for long time ago (only this OS on the laptop at this point)
• Recently installed Windows 11 and wasn’t able to boot into Qubes anymore (dual boot)
• Reinstalled Qubes but still stuck with windows only

[KitsuneNoBaka]

Problem with Windows is that it’s completely selfish.
When you install Windows it wipe any other boot managers from its disk.
So with one drive it’s recommended to install Windows first and then Linux after that. With osprobe you can add Windows bootmgr to GRUB.

With two disk it’s even better and you can install both system on separate drives but… When installing Windows need to set drive for Windows as first in BIOS boot sequence and when installing Linux set Linux drive as first in BIOS boot sequence. If you do that Windows bootmgr will be installed on Windows drive and GRUB will be installed on Linux drive.

If you do not change boot sequence accordingly then both managers will install in first drive in PCI lane.
Though, with GRUB, you can chose to install it to another drive or even to partition but that’s non standard, manual installation/partitioning.

Then you can either change system with BIOS boot sequence or add either GRUB to Windows bootmgr or add Windows bootmgr to GRUB.

[cosmin007]

I’ll try reinstall both doing that

I’ll let you know. Thanks

[cosmin007]

Unfortunately I need to reconfigure everything but it worked
Thank you