hw.nix

  fileSystems."/" =
    { device = "/dev/disk/by-label/NIXOS_ROOT"; # <--
      fsType = "ext4";
    };

  fileSystems."/boot" =
    { device = "/dev/disk/by-label/NIXOS_BOOT"; # <--
      fsType = "vfat";
      options = [ "fmask=0077" "dmask=0077" ];
    };

  fileSystems."/home" =
    { device = "/dev/disk/by-label/NIXOS_HOME"; # <--
      fsType = "ext4";
    };

  swapDevices =
    [ { device = "/dev/disk/by-label/NIXOS_SWAP"; } # <--