Description of problem: hdparm is incorrectly coded for use in F10, as shown by the following output: # hdparm -d --direct /dev/sda /dev/sda: HDIO_GET_DMA failed: Inappropriate ioctl for device Version-Release number of selected component (if applicable): hdparm-8.6-1.fc9.i386 How reproducible: every time Steps to Reproduce: 1.see above Actual results: ioctl usage error Expected results: hdparm functionality, as documented. Additional info:
You can't use hdparm to set DMA mode on SCSI devices or scsi emulated devices. AFAIK DMA is enabled per default for most hard disks with the exception of some blacklisted disks. hdparm can't tell you if SCSI devices have DMA enabled or disabled, but maybe sdparm can do that.