Why does Windows XP let a SATA hdd work in PIO mode instead of DMA?

Posted by Karim on Super User See other posts from Super User or by Karim
Published on 2010-03-24T16:32:26Z Indexed on 2010/03/24 23:43 UTC
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Filed under:

windows-xp

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hard-drive

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slow

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sata

I have a Windows XP system with 2 SATA hard drives - WD Raptor 300 & WD Caviar 500. The motherboard is P31 and I have UDMA enabled in the BIOS.

Now the Raptor works in DMA mode while the Caviar only works in PIO mode. So what are the possible reasons for that?

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