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Old 09-14-2013, 08:27 AM   #1
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Grub does not boot after kernel upgrade (secure boot disabled)


after performing a kernel upgrade, grub2 does not boot into Fedora 19 any more.

I had installed FC19 with secure boot disabled.

When I try to enable secure boot again from the BIOS, I probably wasn't able to sign either grub2 or the (new) kernel properly.

If I try to start the newest kernel with secureboot disabled, I am prompted with the error message:

Secure boot not enabled
alloc magic is broken at ...

whereas if I enable secureboot, I am requested to "Select an X509 certificate to enroll".

I can in fact still boot Win8 (both with and without secure boot), and fortunately can still boot the kernel prior to the upgrade (without secure boot, of course). I immediately set installonly_limit=0 in /etc/yum.conf , in order to avoid future kernel upgrades to clean that working kernel!

Available documentation on secureboot/UEFI/shim is not so clear ...

Any help will be deeply appreciated!



Last edited by ggna; 09-15-2013 at 08:26 AM. Reason: more technical details and error messages included
Old 09-16-2013, 11:45 PM   #2
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Registered: Jan 2006
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It might be a bug, possibly not related to secure boot. See


fedora 19, secure boot, uefi

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