Windows 10 disappeared when using Grub Customizer

[Zesko]

Hello,

Windows 10 (in Legacy mode) disappeared in GRUB menu after the stable update 2021-03-08, if you used Grub Customizer.
But /etc/grub.d/30_os-prober was changed after the update.

[Zesko]

[Stable Update] 2021-03-08- Kernels, Plasma 5.21.2, Haskell, Kodi, Grub, KDE-Dev

Through a recent patch, os-prober seems to have been disabled by default. See here for details: https://gitlab.manjaro.org/packages/core/grub/-/commit/991784fbecb814a14651e1ccbd0dd6b08de2a129 I had the same issue and could resolve it by manually adding the line GRUB_DISABLE_OS_PROBER=false to /etc/default/grub.

Then run sudo update-grub, done!

[Aragorn]

Please do not use grub-customizer. Manjaro uses a customized GRUB, and grub-customizer breaks that. The old forum was full of issues caused by grub-customizer, and there are some that have already been reported again here at the new forum as well.

grub-customizer was designed to work with a plain vanilla GRUB, not with Manjaro.

[Zesko]

How to reset the “default” GRUB:

1. Remove grub-customizer
2. sudo mv /etc/grub.d /etc/grub.d.old
3. sudo rm -rf /etc/grub-customizer
4. Reinstall grub
5. sudo update-grub
6. reboot
7. If it works fine, then you can delete the old directory /etc/grub.d.old.