Set the IDE transfer mode for newer (E)IDE/ATA2 drives.

This is typically used in combination with Using DMA when enabling DMA to/from a drive on a supported interface chipset.

Apart from that, use of this flag is .I seldom necessary since most/all modern IDE drives default to their fastest PIO transfer mode at power-on. Fiddling with this can be both needless and risky.

Use this with extreme caution!