Hello list, Mynew machine has Win-10 installedon /dev/nvme0n1 with the ESP as partition 1. I want to install Gentoo on /dev/nvme1n1. So far I haven't found a way to set up a working boot arrangement. I've tried mounting the ESP on /efi, on /EFI and on /boot/EFI. Efibootmgr seems to write a boot entry in some of those cases, and it's still there after a reboot - but it isn't visible to the BIOS.
Can anyone offer some enlightenment, please?