FWIW, FreeBSD-current, PC164 (ALCOR2): ata0-master: success setting up WDMA2 mode on generic chip ad0: <ST33210A/3.04> ATA-4 disk at ata0 as master ad0: 3098MB (6346368 sectors), 6296 cyls, 16 heads, 63 S/T, 512 B/S ad0: 16 secs/int, 1 depth queue, WDMA2 ad0: piomode=4 dmamode=2 udmamode=2 cblid=0 Creating DISK ad0