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Ultra DMA Mode

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Senior member
After installing windows 2000 both of my IDE hard drives on the primary
channel ran at Ultra DMA Mode (66mb/s) just fine. Now all the sudden the
slave drive got switched to PIO Mode....I tried to get it back to Ultra DMA
Mode with no success.

Anyone experience this? How can I change it back to Ultra DMA Mode?

Thanks
Adrian
 
In some BIOS's you can change it in there. That's how I can change it with my system, don't know if this applies to all BIOS's though.
 
My bios is ok. While the pc boots up it says ata 66 for both drives. Only windows2k says PIO Mode, now. Before if used to say Ultra DMA Mode...
 
I think it's the problem with Via Busmaster driver. Try this: go to device manager, go to IDE controller, select "uninstall" in Via Busmaster controller properties. Reboot and Win2K should redetect the Busmaster again with all the drives. Go to the drives properties and set to "DMA if available". Reboot again and you should have UDMA back.
 
4 in1 4.25 from the via website.

Primary master is Ultra DMA Mode...ok
Primary slave is PIO...should be Ultra DMA Mode

Secondary Master is Ultra DMA Mode...ok
Secondary Slave is DMA Mode...ok


It's just the Primary slave that all the sudden went from Ultra DMA Mode to PIO Mode ???

Thanks


 
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