Dual boot on ZBook Fury G8, Windows won't boot

[kosvi]

Hi!

I have added two additional nvme-drives to my laptop. On the original drive I have Windows 11 installed. SSD 2 is just a data-drive and SSD3 I am trying to install Fedora 41. 

The problem is that dual boot is not working - I can not boot to Windows from grub boot loader. However, if I tap ESC during boot up, choose boot menu from the list and choose "Windows Boot Manager", Windows boots up just fine.

An additional confusion comes from the fact that I've installed Fedora to the SSD3 multiple times now and everytime after I finish install and reboot, I can boot once to Windows from grub boot menu. But only once. Choosing Windows from bios boot menu always works however.

Is there some security measurements that could affect the Windows not being able to boot from grub? How can I fix that? Any other suggestions what might be the issue here?

[tk_srq]

@kosvi,

The path to Windows Boot Manger is \EFI\Microsoft\Boot\bootmgfw.efi by default.

How did you determine Windows boots from the grub? Did you see Windows boot files in the grub folder?

[kosvi]

Actually I disabled fast boot from bios and it might have done the trick. I have an unencrypted Fedora installation, so I still need to install it once more with the drive fully crypted, but I think simply disabling fast boot worked. I will come back and confirm after I've installed Fedora one more time.

[kosvi · Accepted solution]

I can confirm. Disabling fast boot fixed the issue. I now have a perfectly working dual boot system. Thank you everyone who spent their precious time to read my messages and to the person who took the time to write a reply.