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I successfully installed Ubuntu server 20.04 on Dell powerEdge R510, after some days I changed my administrative account privileges, and now I-m not in sudoers list.

During boot (UEFI) I can't access grub menu for entering in recovery mode. Tried pressing shift nothing, tried Esc key but the boot freeze at screen message:

Failed to Set MokListRT: Invalid Parameter
Could not create mokListRT: Invalid Parameter
Importing MOK states has failed: import_mok_state() failed: Invalid Parameter
Continuing boot since secure mode is disabled.

I need root privileges for restore my account and solve MokListRT problem (grubx64.efi).

I don't know how to enter in grub-recovery, no menu, only above message!! Plese help me thanks

karel
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Lorenzo
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1 Answers1

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Solved entering in shell from installation media. Thanks

Lorenzo
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