I copied archlinux from a HDD to a SSD like that: [screenshot 1] (updating fstab was done by generating a new fstab file with genfstab -U /mnt >> /mnt/etc/fstab) (i also updated grub config file when chrooted, it was updated on both drives, the HDD and the SDD).
I rebooted, and tried to boot to the SDD. [Screenshots 2, 3, 4.]. Then I tried unplugging the HDD sata drive, and my UEFI didn't see grub.
@drifting zenith