{ config, pkgs, ... }: { boot.loader.grub.device = "/dev/sda"; boot.loader.grub.enable = true; boot.loader.grub.version = 2; boot.initrd.availableKernelModules = [ "ata_piix" "vmw_pvscsi" ]; fileSystems."/" = { device = "/dev/centos/root"; fsType = "xfs"; }; fileSystems."/boot" = { device = "/dev/sda1"; fsType = "xfs"; }; swapDevices = [ { device = "/dev/centos/swap"; } ]; }