Setting the DMA parameters at both the individual drive level (/etc/sysconfig/harddiskhdc and hardiskhdd had no affect, setting at overall system level /etc/sysconfig.harddisks had no affect. Thanks for the suggestion though. Here are the drive specs, it should be capable if much higher transfer rates than 5 MB/sec: Performance Specifications Rotational Speed 7,200 RPM (nominal) Buffer Size 8 MB Average Latency 4.20 ms (nominal) Contact Start/Stop Cycles 50,000 minimum Seek Times (Average) Read Seek Time (Average) 8.9 ms Write Seek Time (Average) 10.9 ms (average) Track-To-Track Seek Time 2.0 ms (average) Full Stroke Seek 21.0 ms (average) Transfer Rates Buffer To Disk 602 Mbits/s (Max) Buffer to Host (EIDE) - Mode 5 Ultra ATA 100.0 MB/s - Mode 4 Ultra ATA 66.6 MB/s - Mode 2 Ultra ATA 33.3 MB/s - Mode 4 PIO 16.6 MB/s - Mode 2 multi-word DMA 16.6 MB/s I can't get the system to change PIO or DMA modes. It sets to Ultra 2, but without being able to use DMA it only achieves 5 MB/s. Mike -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list