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My root file system is a LVM2 logic volume, and there are few snapshots of it beside. Every time when I run update-grub, it always add menu entries for those snapshots as if they are normal volumes. This behavior not only generates garbage in grub.cfg, but also let it possible to hurt my system because booting from a snapshot is defective.

I know GRUB_DISABLE_OS_PROBER=true can solve it, but I still need OS prober also, because there are Windows volumes in same disk, and I want grub making menu entries for them.

Is there a way I can do it ?

Thanks a lot!

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  • Best way is to write a simple and clean grub.cfg yourself and avoid using grub-mkconfig or any wrapper of it (update-grub whatsoever) once and for all.
    – Tom Yan
    Commented Apr 21, 2021 at 6:03
  • Chainloading Windows is a one-liner. linux and intrid take two. Usually the only other command one might need for an entry is search -s. The story essentially ends with a single insmod and perhaps timeout in addition. Though it is a bit of a hassle for versioned kernel.
    – Tom Yan
    Commented Apr 21, 2021 at 6:16

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