Common Options : 0, 1, 2, 3, ..., 15

Details

Because newer motherboards initialize and boot up much faster than was previously possible, some IDE devices may not be able to spin up fast enough for the BIOS to detect them during the booting up process. This function allows you to delay the initialization of such IDE devices so that they will have sufficient time to spin up.

Leave it at 0 if possible for the shortest possible booting time. But if one or more of your IDE devices fail to initialize during the boot up process, increase the value of this function until they all initialize properly.