I dual boot windows and manjaro on my computer which both are in the same hard disk. After some update on manjaro or windows, grub couldn’t find windows anymore. I did GRUB_DISABLE_OS_PROBER=false but still it can’t find. When I run sudo os-prober it returns nothing. I can boot into Windows by changing the boot order in the bios. Also when I run efibootmgr it sees the Windows. Below is the output of efibootmgr
Timeout: 1 seconds
Boot0000* Windows Boot Manager
and when I run sudo parted -l it prints out this
Model: ATA ST1000DM003-1SB1 (scsi)
Disk /dev/sda: 1000GB
Sektör boyutu (mantıksal/fiziksel): 512B/4096B
Disk bölümü Tablosu: gpt
Numara Başlangıç Son Boyut Dosya sistemi İsim Flags
1 1049kB 106MB 105MB fat32 EFI system partition boot, esp
2 106MB 123MB 16,8MB Microsoft reserved partition msftres
3 123MB 483GB 483GB ntfs Basic data partition msftdata
4 483GB 483GB 524MB ntfs hiden, diag
5 483GB 1000GB 517GB ext4
Sorry my computers language is Turkish but I translated the important parts to English.
I also disabled fast boot on windows and don’t know what is the problem. I will be glad if anyone can help me since I’m still a newbie to linux.
sudo update-grub after putting
Yes, I did. Here is the output it gave
Found initrd fallback image: /boot/initramfs-5.9-x86_64-fallback.img
Warning: os-prober will be executed to detect other bootable partitions.
It's output will be used to detect bootable binaries on them and create new boot entries.
Adding boot menu entry for UEFI Firmware Settings ...
Found memtest86+ image: /boot/memtest86+/memtest.bin
Manjaro and Windows both need to be installed either in bios or uefi mode for
os_prober to pick Windows up.
They both are installed in uefi mode and I’m sure because before update os-prober was finding the Windows. Something changed after some update.
Here is my EFI folder
su -c "ls /boot/efi/EFI"
Boot Manjaro Microsoft
sudo grub-mkconfig work?
If it does not work, then:
sudo mv /etc/grub.d /etc/grub.d.old
sudo update-grub or
sudo grub-mkconfig didn’t worked so I tried the 2nd method and after doing that I got an error saying:
Generating Grub configuration file...
Script `/boot/grub/grub.cfg.new' contains no commands and will do nothing
Syntax errors are detected in generated GRUB config file.
Ensure that there are no errors in /etc/default/grub
and /etc/grub.d/* files or please file a bug report with
/boot/grub/grub.cfg.new file attached.
I solved this problem by undoing
sudo mv /etc/grub.d /etc/grub.d.old command. I reinstalled grub using
grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=manjaro --recheck maybe this command was faulty and caused that problem. But in the end neither the first and second method solved the problem and grub still doesn’t see Windows
Okey I solved the problem by deleting grub and moving to rEFInd and it’s working properly. For the ones who have this problem and want to continue using grub I don’t know the solution.