> > > Hi, > > > > > > i have 2 matrox hd disks and whenever i want to set the dma to 1 i > > > get this error: HDIO_SET_DMA failed: Operation not permitted > > > The first is a 40 Gb Matrox IDE and the second a 120 GB Matrox IDE. > > > They are recent disks (< 1 year). My motherboard is abit b6, intel > > > 440bx chipset PIIX4 IDE. lspci reports that it's a intel 440bx > > > chipset (82443 BX/ 82371 EB) > > > > > > A while ago i recompiled the kernel for LVM support and i think i > > > might have excluded something that the kernel needs to set the dma. > > > What kernel options do i need to have set in order to allow dma=1? > > > > > > Thanks. > > > Benedict > > > > >>Use this command to see what kernel options there are and what is > > >>selected in your kernel config file located in /boot. > > >>'cat /boot/config-<kerel version> |grep DMA' > > >>- -- > > >>Greg Madden > > > > I did this and the only options that were set are > > CONFIG_BLK_DEV_IDEDMA_PCI=y > > CONFIG_BLK_DEV_IDEDMA=y > > All the others are specified as "is not set" > > So it seems as if dma is allowed here. > > Try also to grep for BLK_DEV. I think, in your case, it would be > CONFIG_BLK_DEV_PIIX.
Ha! that might be it! cat /boot/config |grep CONFIG_BLK_DEV_PIIX returns # CONFIG_BLK_DEV_PIIX is not set I will try to recompile a new kernel with this option set. Thanks Benedict -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]