Hello everyone, I'm using one HP dx7300 PC and the motherboard is based on intel 965G with ICH8. I setuped Red Hat AS3 update9 successfully but my SATA H.D was recognized as /dev/hda, which model is 'Barracuda 7200.9' produced by Seagate. When I run hdparm -d1 /dev/hda, get such info: HDIO_SET_DMA failed: Operation not permitted using_dma = 0 (off) How to enable the DMA mode? Either how to recognize the SATA H.D to /dev/sda? Thanks for your help! Have a good day! Regards, Joffre

Previously tech11 <tech11@sohu.com> wrote: > Hello everyone, > I'm using one HP dx7300 PC and the motherboard is based on intel 965G with > ICH8. I setuped Red Hat AS3 update9 successfully but my SATA H.D was > recognized as /dev/hda, which model is 'Barracuda 7200.9' produced by > Seagate. When I run hdparm -d1 /dev/hda, get such info: > HDIO_SET_DMA failed: Operation not permitted > using_dma = 0 (off) > How to enable the DMA mode? Either how to recognize the SATA H.D to > /dev/sda? Thanks for your help! This looks to me like the HDD is under the control of the generic ATA driver. I suspect you have add the right driver to the kernel by either loading its module or compiling it in. The generic driver cannot put all chipsets into DMA mode. Arno