RB_GDB
cur_pri = (boothowto & RB_GDB) ? 2 : 0;
RB_ASKNAME, RB_CDROM, RB_KDB, RB_DFLTROOT, RB_GDB, RB_MULTIPLE,
case 'g': howto |= RB_GDB; break;
{ "boot_gdb", RB_GDB},