Ubuntu – Can’t install Ubuntu 18.10 on XPS 15 – EFI\BOOT\mmx64.efi not found


I tried to install Ubuntu 18.10 on my XPS 15 9570 earlier. Everything was working fine until I got to the partition selection part of the installation. That's when the installer crashed and I had to shut down my machine. I think it's because I had my SATA configuration set to RAID ON instead of AHCI, which is now fixed.

Now when I try to run the installer from my bootable USB I get the following error

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

Hoping someone might have some idea as to what is going on

Best Answer

I booted an Ubuntu Live USB stick, went into my hard disk drive's /boot/efi folder and renamed the file grubx64.efi to mmx64.efi

Reboot the machine and it should work.

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