how do i set DMA mode on ?

[Desperado84]

in windows, i have the option
select DMA if available.
i have 2nd IDE for primary Toshiba SD-M1612 and secondary Plextor 24/10/40A

it just used PIO
any ideas ?
thanks

[TheWizard]

If "Select DMA If Available" is chosen, then Windows will assign the fastest connection speed possible. After you choose "Select DMA If Available" and the drive appears to use PIO mode then that is the fastest speed possible by the drive. The only other thing that could be limiting you from using UDMA/33 is the motherboard, but most motherboards since the Pentium II era have been able to use at least UDMA/33.

[dodecahedron]

check out the FAQ:
How to enable DMA?
Problems enabling DMA in Windows XP

[sonyman]

I would also recommend using the latest VIA 4-in-1 drivers if you have a VIA chipset.

-Scott

[mike_s104]

I have had problems with it too, even after the Via 4-in-1 drivers. All you have to do once you notice that's the drive is not in DMA, is to delete the controller that it's on. after that, reboot the machine and it will find motherboard resources and ask you to reboot again. once you reboot this time, all we be OK.

I have had this "change" on it's own under WinXP. I KNEW for a fact I had my Sony DRU-500A in DMA and after about 20 DVD-Rs, I noticed it running really slow, slowing my machine down A LOT, and the buffer under Nero would never stay above 40% for more then 1 sec. After I made 2 DVD-Rs like this, I cheked and it was in PIO. I then did what I described above and it's fine now.

[dodecahedron]

I have had problems with it too, even after the Via 4-in-1 drivers. All you have to do once you notice that's the drive is not in DMA, is to delete the controller that it's on. after that, reboot the machine and it will find motherboard resources and ask you to reboot again. once you reboot this time, all we be OK.

no need to reboot.
check out the FAQ i pointed to Problems enabling DMA in Windows XP