{config, ...}: {
  boot.initrd.kernelModules = ["dm-snapshot"];
  boot.initrd.availableKernelModules = ["xhci_pci" "ahci" "usbhid" "usb_storage" "sd_mod"];
  boot.kernelModules = ["kvm-amd"];

  boot.initrd.services.swraid.mdadmConf =
    config.environment.etc."mdadm.conf".text;

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

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

  boot.loader.grub = {
    enable = true;
    efiSupport = false;
    version = 2;
    device = "nodev";
    devices = ["/dev/sda" "/dev/sdb"];
  };
}