Booting from USB, file not found

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roadrunnerray
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Booting from USB, file not found

Post by roadrunnerray »

I am trying to boot to my LM 19.3 live on a USB drive and receive the message, "file not found efi/boot/mmx64.efi.

The file on my USB drive in that directory is efi/boot/x64.efi.

This boot worked earlier. Not sure why this is happening.

Running windows10 on a 64 bit ASUS laptop.
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LanceM
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Re: Booting from USB, file not found

Post by LanceM »

Can't you format it again and redo it?
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roadrunnerray
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Re: Booting from USB, file not found

Post by roadrunnerray »

Tried that many times, used different versions of linux and different USB drives.

Not sure where the directory and file name, efi/boot/mmx64.efi, are stored.

Searched the internet and found a solution just now.

I changed the file name on the boot USB, grubx64.efi, to mmx64.efi. The boot worked fine after this change.

The entire error message I received initially was;

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
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LanceM
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Re: Booting from USB, file not found

Post by LanceM »

What app are you using to make the live?
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roadrunnerray
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Re: Booting from USB, file not found

Post by roadrunnerray »

LanceM wrote:
Fri Jul 10, 2020 4:30 pm
What app are you using to make the live?
unetbootin
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LanceM
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Re: Booting from USB, file not found

Post by LanceM »

Have you tried Mint's image writer. Just right click the iso and choose make bootable USB stick. When you use Unetbootin you need to install Extlinux as a dependency. It's in the Software Manager.
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roadrunnerray
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Re: Booting from USB, file not found

Post by roadrunnerray »

LanceM wrote:
Fri Jul 10, 2020 4:55 pm
Have you tried Mint's image writer. Just right click the iso and choose make bootable USB stick. When you use Unetbootin you need to install Extlinux as a dependency. It's in the Software Manager.
Thanks, I don't get that option.

Was not aware of Extlinus requirement. Do you believe this was the problem with the mmx64.efi file name?
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LanceM
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Re: Booting from USB, file not found

Post by LanceM »

Extlinux could be your missing dependency problem. I much prefer the built in Mint writer. Only thing is if you format the stick again after using the image writer you have to unmount the partitions before formatting, or it will lead to problems. All easy with Disks.
Last edited by LanceM on Fri Jul 10, 2020 5:57 pm, edited 1 time in total.
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roadrunnerray
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Re: Booting from USB, file not found

Post by roadrunnerray »

LanceM wrote:
Fri Jul 10, 2020 5:11 pm
Extlinux could be you missing problem. I much prefer the built in Mint writer. Only thing is if you format the stick again after using the image writer you have to unmount the partitions before formatting, or it will lead to problems. All easy with Disks.
Thanks for your thoughts Lance...........
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