#Failed to open \EFI\BOOT \mmx64.eft

70 messages · Page 1 of 1 (latest)

verbal totem
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so im trying to install linux mint on a laptop, i tried dualbooting it with windows, it was fine until i had to turn off windows bitlocker. i did that and decrypted all my files and now it wont even let me boot into the usb at all. it keeps saying "Failed to open \EFI\BOOT \mmx64.eft - Not Found Failed to load image: Not Found Failed to start MokManager: Not Found Something has gone seriously wrong: import_mok_state failed: Not Found". ive tried everything. reformatting the drive, booting into legacy mode, changing other settings, nothing worked. i am literally starting to give up all hope.

reef light
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this is a common issue. happens to MANY stupid UEFI-run computers

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the workaround is to use a flasher named ventoy. It gets right past that mess.

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#1295810542056902759 message

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Solution 1, and guide link for setting up ventoy found there.

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also since this is dual boot, make sure to disable Windows Fast Startup too before anything. also Secure boot off, Fast Boot in Bios off too, and Bitlocker off (if Windows disk management shows bitlocker anywhere on main drives)

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<< Link to Turning off Fast Startup, and the dual-boot reference videos.

verbal totem
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which i did, now it wont let me boot in at all and i get that error message

reef light
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well known issue. in once, then screwed after

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use ventoy, u wont be disappointed

verbal totem
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alr

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first i tried using etcher then rufus, neither one did anything

reef light
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also make sure to boot the usb up as uefi device if Windows itself is uefi-run&booted for dual-compatibility

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check Win. System Information on BIOS mode line

verbal totem
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@reef light it worked. tysm, i was literally about to give up all hope

reef light
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smart 😋

verbal totem
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in case i ever need linux tech support in the future, you're my guy

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im not exactly a first time linux user, i did use mint and arch on virtual machines in the past but this is my first time installing it on actual hardware

reef light
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yeah. make sure the other things I mentioned are done for a simple and easy install.

verbal totem
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gotcha

reef light
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first 6 minutes of that EC vid shows single-drive dualboot demonstration/setup

verbal totem
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@reef light

reef light
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is it true thumb drive or sd-card reader?

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maybe got too hot

verbal totem
reef light
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or faulty flash cells

reef light
verbal totem
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i used my main pc to get the iso onto ventoy and plugged it into my laptop

reef light
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see if got too hot

verbal totem
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it doesnt feel hot

reef light
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u using sata to usb adapter?

verbal totem
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im using a usb stick

reef light
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a true usb thumb drive is your ventoy'd device?

verbal totem
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yes

reef light
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yeh maybe faulty cells.

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or loose connection

verbal totem
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its the only usb drive i have

reef light
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try using black usb port

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alternately, rename the iso on ventoy "old.trash" and add fresh iso

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so it writes to new cells

verbal totem
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the iso ate itself so now i have to recopy it

reef light
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reboot to windows, simply rename the old distro.iso file

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to like distro.old

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and then copy new iso again

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u dont have to download a fresh one (probably)

verbal totem
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this is what i got btw

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the old iso ate itself after it failed to install

reef light
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isnt that the old ISO ur showing me in the screenshot?

verbal totem
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nah new one

reef light
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oh.

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well try again. gl

verbal totem
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k

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do i boot in normal mode or grub2 mode?

reef light
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norm

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do checksum too

verbal totem
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whats that

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ok

reef light
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and compare the calculated hash to the one stated in the integrity section of Downloads area of mint website

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if they match, proceed

verbal totem
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@reef light decided to ditch the dualbooting thing altogether and install linux mint on the entire drive

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if i wanna dualboot it seems like my best bet is just to use two separate SSDs

reef light
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So you installed successfully then?

verbal totem