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I couldn't install Ubuntu 18.04 from a bootable USB drive. This error is being shown. 

Failed to open \EFI\BOOT\mmx64.efi - Not Found
Failed to load image \EFI\BOOT\mmx64.efi: Not Found
Failed to start MokManager: Not Found
Something has gone seriously wrong: import_mok_state() failed

I tried to do a system recovery of Windows 10 three times until now, but I still can't install Ubuntu. The same error is being shown.

karel
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Suranjana Bhowal
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1 Answers1

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Your Motherboard seems to be in secure Boot EFI Mode: 1. If this is a parallel Installation Attempt to an existing EFI-booted OS u need to work the EFI-Boot-Functionality into your Stick Image: create the missing EFI-Folders manually and put the Setup-File (.efi) in.
2. go into your UEFI/BIOS and/or select the proper Boot-Device in the appropiate Mode: Your Stick should show up twice (EFI & without), this determines where the Installation-Routine is looking for the Setup-File: in /Boot for "normal" Installation and in /Boot/EFI for the "secure Boot" (signed) Installation.
(3.) as a workaround "secure Boot" can be disabled in the UEFI/BIOS

Tessil
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