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Hard Disk Problems with IBM Thinkpad R50e and Linux Kernel

When trying to use hdparm to activate the DMA mode, I got the error message

"HDIO_SET_DMA failed".

This could be solved by unsetting _all_ other IDE chipset drivers than the driver for the Intel chipsets (CONFIG_BLK_DEV_PIIX=y), even CONFIG_IDE_GENERIC is not set. If CONFIG_BLK_DEV_IDEDMA_PCI=y and CONFIG_BLK_DEV_IDEDMA_FORCED=y are set, it is not even necessary to use hdparm for the activation.

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© Werner Heuser 1997-2015 · http://tuxmobil.org/ibm_r50e_linux_hard_disk_speed.html · last change Mon Nov 12 2007