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i had a dual boot configuration with ubuntu and windows 11, everything was working fine. I had not used ubuntu for a few months and i decided to update it, then a dialog showed up telling me things about secure boot has been enebled, to be honest, i did not payed attention to some messages ubuntu gave me. After rebooting the pc, windows boot manager disappeared from grub, at first i used os-prober and it returned this message: "find: ‘/boot/efi/EFI/Microsoft/Boot/da-DK’: Input/output error" after that i modified the grub file and added: GRUB_DISABLE_OS_PROBER=false. the problem is that os-finder does not show anything anymore,and i don't know how to fix this, i am completely lost. Please help

Diego Huite
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  • Did Windows update both UEFI resetting to defaults & update Windows to defaults? UEFI may need settings you originally changed redone. And then did Windows turn bitlocker and or fast start up back on? That sets hibernation flag on all NTFS partitions. https://askubuntu.com/questions/843153/unable-to-mount-windows-10-partition-it-is-in-an-unsafe-state & https://askubuntu.com/questions/145902/unable-to-mount-windows-ntfs-filesystem-due-to-hibernation Grub only boots working Windows, but it cannot be hibernated nor encrypted. If you want those boot directly from UEFI menu. – oldfred Nov 25 '22 at 20:09

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