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# Example to create a bios compatible gpt partition
{ disks ? [ "/dev/vdb" ], lib, ... }: {
  disk = lib.genAttrs [ (lib.head disks) ] (device: {
    device = device;
    type = "disk";
    content = {
      type = "table";
      format = "gpt";
      partitions = [
        {
          name = "boot";
          type = "partition";
          start = "0";
          end = "1M";
          part-type = "primary";
          flags = ["bios_grub"];
        }
        {
          name = "root";
          type = "partition";
          # leave space for the grub aka BIOS boot
          start = "1M";
          end = "100%";
          part-type = "primary";
          bootable = true;
          content = {
            type = "filesystem";
            format = "ext4";
            mountpoint = "/";
          };
        }
      ];
    };
  });
}