#define INCL_BASE #include char device_name[] = "REBOOTZZ"; main() { USHORT action; int err; HFILE handle; err = DosOpen(device_name, &handle, &action, 0L, // size 0, // attribute 1, // open the file 0x42, // read/write, deny-none share mode 0L); // reserved if (err) printf("DosOpen on device %s failed. Err = 0x%x.\n", device_name, err); }