Unable to dual boot, win 11 and linux mint.

MiSt

New Member
Joined
Sep 27, 2025
Messages
5
Reaction score
3
Credits
49
After several attempts, to dual boot mint, using an ISO that worked on other comps, Mint loads everything works up to the restart. then it boots to win 11. left with no options to select after the next start up.only win 11. Then after the last attempt I got a message, "This One" Boot repair after update.
URL:https://paste.ubuntu.com/p/XpZRZ9VHWT/
boot repair @ gmail.com
locked-nvram detected.
please do not forget to make your UEFI firmware boot on linuxmint 22.1 XIA (22.1)
entry (nvmeOn1p1/efi/ubuntu/shimx64efi)!
please disable secure boot in bios then try again, "I did this" And the next start up was win 11
Personally I believe the problem is win11 stopping this. works fine with win 10.

Problem resolved. I missed turning off the fast Boot.
 
Last edited:


Common reasons Linux fails to load/boot
1] Corrupt download [check SHA sum]
2] bad burn to installation medium [try again] [if you used Rufus then try Balena Etcher or Ventoy]
3] Wind 8.2 and higher quick start/fast boot or secure boot not disabled [after disabling do a full power re-boot not a restart]
4] defective pen-drive/DVD
5] hardware fault,
5A] If old style HDD run integrity check
5B]if SATA SSD check for hidden partition at the beginning of drive [this will stop Grub from loading] and delete it before re-installing Linux
If New M2.NVMe check, your system is NVMe compatible [not all older kit is]

addendum, also downloading the wrong build for your cpu, for AMD and Intel normal chips use AMD 64 for Arm chose an arm distribution
 
Last edited:
This may help depending on your hardware

 
I read through your boot repair summary: the paste on Ubuntu Pastebin.

Did you verify the integrity of the .iso file before you installed Linux?
And did you reduce the size of your Windows partition before installing Ubuntu or tell the installer to install Ubuntu alongside of Windows?

There seems to be more than 1 issue on this machine of yours.

Code:
chroot /mnt/boot-sav/nvme0n1p7 grub-install --efi-directory=/boot/efi --target=x86_64-efi --uefi-secure-boot
Installing for x86_64-efi platform.
grub-install: warning: EFI variables cannot be set on this system.
grub-install: warning: You will have to complete the GRUB setup manually.
Installation finished. No error reported.
df /dev/nvme0n1p1

Aside from the issue's above, your UEFI firmware's Non-Volatile Random-Access Memory (NVRAM) is preventing modifications to the boot entries, and consequently, your Linux Mint installation is not correctly registered in the UEFI boot order.
And additionally there is no sign of the Grub bootloader installed to the MBR of your nvme drive.
Code:
 => No boot loader is installed in the MBR of /dev/nvme0n1.
It could be Windows causing the issue. Possible scenario is that the Windows boot manager is doing what the Windows boot manager does. It's installed (unless I am mistaken) on the MBR of your nvme.
Code:
Windows Boot Manager (on nvme0n1p1)   osprober-efi-3ABD-DF88

Having said that I think the issue is that your missing a partition for Grub to install to the nvme drive.

Please post the output of:
Code:
sudo fdisk -l

@wizardfromoz is very good with multiple partitions. He's schooled me on this so I say, wait for him.
 
I read through your boot repair summary: the paste on Ubuntu Pastebin.

Did you verify the integrity of the .iso file before you installed Linux?
And did you reduce the size of your Windows partition before installing Ubuntu or tell the installer to install Ubuntu alongside of Windows?

There seems to be more than 1 issue on this machine of yours.

Code:
chroot /mnt/boot-sav/nvme0n1p7 grub-install --efi-directory=/boot/efi --target=x86_64-efi --uefi-secure-boot
Installing for x86_64-efi platform.
grub-install: warning: EFI variables cannot be set on this system.
grub-install: warning: You will have to complete the GRUB setup manually.
Installation finished. No error reported.
df /dev/nvme0n1p1

Aside from the issue's above, your UEFI firmware's Non-Volatile Random-Access Memory (NVRAM) is preventing modifications to the boot entries, and consequently, your Linux Mint installation is not correctly registered in the UEFI boot order.
And additionally there is no sign of the Grub bootloader installed to the MBR of your nvme drive.
Code:
 => No boot loader is installed in the MBR of /dev/nvme0n1.
It could be Windows causing the issue. Possible scenario is that the Windows boot manager is doing what the Windows boot manager does. It's installed (unless I am mistaken) on the MBR of your nvme.
Code:
Windows Boot Manager (on nvme0n1p1)   osprober-efi-3ABD-DF88

Having said that I think the issue is that your missing a partition for Grub to install to the nvme drive.

Please post the output of:
Code:
sudo fdisk -l

@wizardfromoz is very good with multiple partitions. He's schooled me on this so I say, wait for him.
Absolutely correct. Problem solved. Was apparently a win 11 overide. blocking boot loading. "Fast Boot disabled" All Good.
 
@MiSt if you are sure this is solved, you can mark it as such by going to your first post, and do as follows

Near bottom left of the post click Edit - (No Prefix) - Solved

Cheers

Chris Turner
 
Absolutely correct. Problem solved. Was apparently a win 11 overide. blocking boot loading. "Fast Boot disabled" All Good.
Cool, glad you found the issue fixed it and gave the details. Kindly mark your thread solved as our Administrator: wizardfromoz asked.

Enjoy the weekend!
Alex
 


Follow Linux.org

Members online


Top