I've just upgraded to 5.3-RELEASE-p5 and noticed that neither iostat nor systat -vmstat show statistics about acd devices, although I can use them perfectly well. If I enable atapicam then I can see statistic for cd and pass devices, but still nothing for acd. In 4.X I've never had a problem with that. ATA relate devices in kernel: device ata device atadisk # ATA disk drives device atapicd # ATAPI CDROM drives #device atapicam Am I missing anything ? -- Andriy Gapon