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These are the steps need to boot disks when the source hypervisort (in my case hyper-v) was using EFI and GPT disks.

Note wether the OS is Debian, Ubuntu, etc or Windows these steps change - the main difference will be step 7 and the name of the efi file. You will only need to do this if the OS has been install on a source hypervisor where EFI was enabled on VMs (e.g. gen2 VMs on Hyper-v)

Steps

  1. boot and entio bios to change UEFI order click in console as it says bootin and mash esc key until you see:

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  1. select boot maintenace manager above

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  1. then select boot options.

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  1. then select add boot option

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  1. then select the boot volume (if you did step 12 right there will be only one)

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  1. select EFI

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  1. select the OS (in my case debian)

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  1. select the right EFI file - in my case either grubx64.efi or shimx64.efi will work, i go with grubx64.efi

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  1. add a description - anything will do, just rememebr it

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  1. commit changes and exit

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  1. select change boot order:

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  1. select what you see here ny default by pressing enter:

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  1. now highlught the entry you made:

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  1. and keep pressing + until it looks like this and press enter:

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  1. you be back here, press F10 to save, and then esc and esc and :

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  1. when you are back here choose reset and your new vm will boot

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