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After enabling and starting the automatic recognition, everything fell into place nicely, and DMA was automatically enabled by Windows.
2009-11-19 – flemur13013 mentioned again in this comment that setting the disk recognition to "Auto" in the BIOS settings solved his problem of a slow, CPU-gobbling secondary hard disk.
As instructed, he first installed the Intel Chip Set Installation Utility, which already solved the problem (as observed in Task Manager). After that there was no longer any DMA/PIO choice in the controller options, but everything now works right automatically.2008-03-30 – Arran located the elusive drivers for this ALI M5229 controller chip.Please read his comment For those with the ALi M5229 IDE Controller in the comments on one of the next pages.If you use the program again after a short while, it may again report that it has reset the channels.
This is normal behavior and not a sign of any problem. (Peter Frank reported successful application on Windows 2000 with Service Pack 4.) DMA is an abbreviation for Direct Memory Access, an access method for external devices where the data transfer is not done by the central processor, but by a small special processor called DMA controller.(This pin is responsible for DMA requests of the hard disk.) As the disk can no longer reach the host with its requests, there is a communications problem, and Windows XP switches into PIO mode.