Window is no longer listed in boot menu

Ask Fedora
1

Hi,

I just moved to Fedora and so far my experience has been Great!!
I have been using Ubuntu for many years and I wasn’t aware of the progressed done by Fedora. Such a great project, the quality of this distribution is beyond expectation…

The only part I didn’t manage to fix is the access to my Windows 10 partition. It was working as expected with Ubuntu, but when I installed Fedora I must have messed something and the menu item is no longer shown in boot.

I have read through the documentation and I re-installed the relevant packages and re-created grub.cfg:

dnf reinstall grub2-efi shim
grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg

The menu shows 3 Kernels including one named recovery, but it doesn’t show Windows 10.
I have confirmed that I’m using EFI. I have run os-prober and it doesn’t have any output.

The result from lsblk is:

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 1 0B 0 disk
sdb 8:16 1 0B 0 disk
zram0 252:0 0 8G 0 disk [SWAP]
nvme0n1 259:0 0 476.9G 0 disk
├─nvme0n1p1 259:1 0 260M 0 part /boot/efi
├─nvme0n1p2 259:2 0 16M 0 part
├─nvme0n1p3 259:3 0 93.4G 0 part
├─nvme0n1p4 259:4 0 1000M 0 part
├─nvme0n1p5 259:5 0 1G 0 part /boot
└─nvme0n1p6 259:6 0 381.3G 0 part /home
/

Partitions nvme0n1p2, nvme0n1p3 and nvme0n1p4 are related to Windows.

2

When installing Fedora Linux, did you make sure not to format nv...p1, your efi partition? If you formatted it, you lost the efi loader for Windows and os-prober can’t find it. If that’s the case, I think the solution is to start Windows recovery and tell it to reinstall the bootloader onto the efi partition.

Have a look at the content of /boot/efi/... and see if windows firmware is still present, or use efibootmgr -v.

3

Thanks for the answer augenauf.
I formatted mvme0n1p1. There is no windows in /boot/efi/.. Now I can see the problem.

The output from efibootmgr -v is:

>BootOrder: 0003,001D,0001,0000,001A,001B,001C,001E,001F,0020,0021,0022,0002
Boot0000* Windows Boot Manager	HD(1,GPT,f88c38c9-28ce-4264-b201-5c0bcc23757d,0x800,0x82000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}...4................
Boot0001* ubuntu	HD(1,GPT,f88c38c9-28ce-4264-b201-5c0bcc23757d,0x800,0x82000)/File(\EFI\ubuntu\shimx64.efi)
Boot0002* Linux-Firmware-Updater	HD(1,GPT,f88c38c9-28ce-4264-b201-5c0bcc23757d,0x800,0x82000)/File(\EFI\ubuntu\shimx64.efi)\.f.w.u.p.d.x.6.4...e.f.i...
Boot0003* Fedora	HD(1,GPT,10f69d55-8787-42e4-b373-e514af1cd58c,0x800,0x82000)/File(\EFI\fedora\shimx64.efi)
Boot0010  Setup	FvFile(721c8b66-426c-4e86-8e99-3457c46ab0b9)
Boot0011  Boot Menu	FvFile(126a762d-5758-4fca-8531-201a7f57f850)
Boot0012  Diagnostic Splash Screen	FvFile(a7d8d9a6-6ab0-4aeb-ad9d-163e59a7a380)
Boot0013  Lenovo Diagnostics	FvFile(3f7e615b-0d45-4f80-88dc-26b234958560)
Boot0014  Asset Information	FvFile(da465b87-a26f-4c12-b78a-0361428fa026)
Boot0015  Regulatory Information	FvFile(478c92a0-2622-42b7-a65d-5894169e4d24)
Boot0016  ThinkShield secure wipe	FvFile(3593a0d5-bd52-43a0-808e-cbff5ece2477)
Boot0017  Startup Interrupt Menu	FvFile(f46ee6f4-4785-43a3-923d-7f786c3c8479)
Boot0018  Rescue and Recovery	FvFile(665d3f60-ad3e-4cad-8e26-db46eee9f1b5)
Boot0019  MEBx Hot Key	FvFile(ac6fd56a-3d41-4efd-a1b9-870293811a28)
Boot001A* USB CD	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,86701296aa5a7848b66cd49dd3ba6a55)
Boot001B* USB FDD	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,6ff015a28830b543a8b8641009461e49)
Boot001C* NVMe0	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,001c199932d94c4eae9aa0b6e98eb8a400)
Boot001D* USB HDD	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,33e821aaaf33bc4789bd419f88c50803)
Boot001E* PXE BOOT	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,78a84aaf2b2afc4ea79cf5cc8f3d3803)
Boot001F* LENOVO CLOUD	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,ad38ccbbf7edf04d959cf42aa74d3650)/Uri(https://download.lenovo.com/pccbbs/cdeploy/efi/boot.efi)
Boot0020* ON-PREMISE	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,ad38ccbbf7edf04d959cf42aa74d3650)/Uri()
Boot0021  Other CD	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,aea2090adfde214e8b3a5e471856a35400)
Boot0022  Other HDD	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,91af625956449f41a7b91f4f892ab0f600)
Boot0023* IDER BOOT CDROM	PciRoot(0x0)/Pci(0x14,0x0)/USB(11,1)
Boot0024* IDER BOOT Floppy	PciRoot(0x0)/Pci(0x14,0x0)/USB(11,0)
Boot0025* ATA HDD	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,91af625956449f41a7b91f4f892ab0f6)
Boot0026* ATAPI CD	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,aea2090adfde214e8b3a5e471856a354)
4

Wow, lots of entries…

Windows Boot Manager is supposed to be located in:

\EFI\Microsoft\Boot\bootmgfw.efi)

(see Boot0000).

If it is not there, you need to restore it using Microsoft tools.
Next time you install any OS in a dual-boot setup, don’t format the EFI partition (In Fedora’s installer, there is a checkbox for that).