Update To CentOS7.4: Failed To Open \EFI\BOOT\grubx64.efi – Not Found

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Hello All,

updating from CentOS7.3 to CentOS7.4 rendered one of our laptops unbootable. EM:
Failed to open \EFI\BOOT\grubx64.efi – Not Found Failed to load image \EFI\BOOT\grubx64.efi: Not Found start_image() returned Not Found

How could this occur because of an update and how to fix this?

What I tried is booting from CentOS usb, chroot to /mnt/sysimage and gave command:
efibootmgr –create –label CentOS –disk /dev/sda1 –loader “\EFI\CentOS\shim.efi”

This gave no EM, but booting remains impossible.

I have to say I don’t know whether to try grub2 of efibootmgr commands.

Any help would be very much appreciated.

Greetings, J.

3 thoughts on - Update To CentOS7.4: Failed To Open \EFI\BOOT\grubx64.efi – Not Found

  • Hi Johan appart from the above copy of the boot file, would you probably need something like this:

    efibootmgr -b xxxx -l EFI/BOOT/grubx64.efi

    i.e. tell BOOTxxxx to use the intended boot file.

    xxxx may be found out via

    efibootmgr -v BootCurrent: 0000
    Timeout: 0 seconds No BootOrder is set; firmware will attempt recovery Boot0000* Notebook Hard Drive BBS(HD,,0x0)…………………………………………………………….. Boot0001* Notebook Ethernet BBS(128,,0×0)……………………E………………………………………. Boot0002* CentOS
    HD(1,GPT,068e45cc-b2b6-4688-9974-ad7d27e419f8,0x800,0x7a000)/File(EFICentOSgrubx64.efi)

    xxxx by default is 0000

    suomi

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