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I'm using a red hat developer subscription, so no official support from red hat.

I have a rhel 9.6 installed to a 2TB nvme SSD, whose partitions are as follows:

  • 1 : 600MB (EFI)
  • 2 : 1GB (forget what it is, seemed to be a rhel boot-related partition)
  • 3 : 904.01GB (rhel main partition)
  • 4 : 200GB (a Windows 11 system partition)
  • 5 : 200GB
  • 6 : 557.41GB

After I executed dnf update and reboot as normal, grub cannot find any of my rhel kernel(including rescue mode). The only thing grub found was Windows boot manager.

Then I boot into Windows to check my partitions, finding that all my partitions were fine.

So how to find my rhel back? Please help.

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  • Use the RHEL installation media to boot in rescue mode, and then use it to view the /etc/fstab from your installation. If the rescue mode can successfully automount your installed OS, check if your /boot directory is empty, and/or if your 2nd partition is getting mounted as /boot. Then, /boot/efi/EFI/redhat/grub.cfg should have just a few lines and include the UUID of whichever partition has the contents for /boot - make sure this is correct. Then please edit your question to add what you found out trying to do all this. Commented Jun 20 at 9:00

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After you boot in rescue mode, Try re-installing grub2-efi using:

dnf reinstall grub2-efi

Might also need to re-install shimx if it was installed.. this worked on a couple of 8.10 instances I updated recently. Might work on later versions as well as the implementation is still the same. Full Process is here: https://off-grid-engineering.com/2025/07/08/recover-a-crashed-linux-8-10-vm/

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