Dual boot: Windows installation won't boot due to GRUB "no such device" error

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What @ilenisaatio said:

You seem to have 2 ESP partitions and then you can’t use grub to boot Windows: only the UEFI firmware can by switching the boot drive to the other NVMe.

  • If that’s a solution: live with it.
  • If that’s not, you’re in for a re-install as moving UEFI boot files can be done but you need to boot from a USB stick, copy everything over, change the boot parameters in NVRAM, … so if your installation is quite new, a reinstall will be faster and definitely much easier.

:sob:

P.S. While you’re re-installing, read this to put you in a better mood:

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