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What should my Windows 10 non-uefi installed entry look like in Grub2?

asked 2018-06-18 09:24:22 -0500

HoboPrimate gravatar image

Please help me :)

I have two discs, a SSD and a HDD, and I installed windows 10 first on the first partition of the second disk (HDD). I automatically created a recovery partion on a first partition of the SSD. It booted correctly, so then I installed fedora. I am now on Fedora, but os-prober detected the windows recovery partition, so it shows a windows error screen when booting to it. I have messed a bit with the Windows 10 menu entry, changing UUID and hd0->hd1, etc. Anyone have any clear ideas of how to move forward? Can I make os-prober to correctly detect windows 10 partiton? Should I do it manually? If so, how?

Thank you for any help!

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answered 2018-06-18 10:23:04 -0500

cmurf gravatar image

I can't imagine this is a standard or supported configuration for Windows, either by Microsoft or by Fedora. I'd expect all Windows partitions to be self contained on a single drive, either the SSD or the HDD. Anyway the only way to do what you want is to fix it manually, so you're going to need to post the grub.cfg and the output from blkid somewhere, and maybe someone will help describe how to modify the existing grub.cfg, or better how to disable os-prober in /etc/default/grub and add a Windows entry to either /etc/grub.d/40custom or 41custom; and then rerun grub2-mkconfig. Anything non-standard is going to be harder to fix and maintain correctly.

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Add GRUB_DISABLE_OS_PROBER=true to /etc/default/grub

Full documentation for grub configuration is found using info grub or pinfo grub.

villykruse gravatar imagevillykruse ( 2018-06-18 11:40:18 -0500 )edit

Thank you both for your help, I will check out grub documentation.

HoboPrimate gravatar imageHoboPrimate ( 2018-06-19 05:17:59 -0500 )edit

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Asked: 2018-06-18 09:24:22 -0500

Seen: 137 times

Last updated: Jun 18 '18