Force DMA for secondary drives

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Guest

So far I have tried just about every suggestion I could find...
For both my CD/DVD ROM drives and my hardrives IDE channels, the slave stays
in PIO mode even though I have set it to DMA when available. The drives are
certainly capable of supporting DMA. Is there any way to force Windows to
recognize this?
I have checked my bios....ok there
I have uninstalled the IDE channel in Device Manager and rebooted....didn't
work
I have changed the registry to EnableUDMA100....didn't work (also tried 66)
I have deleted SlaveIdDataChecksum in the registry and rebooted....didn't work

One peculiar note: in device manager I see two identical Intel Ultra ATA
storage controllers...would it be safe to try and uninstall one?...maybe
there is a conflict

Any help is much appreciated.
Thank you
 
Ed said:
So far I have tried just about every suggestion I could find...
For both my CD/DVD ROM drives and my hardrives IDE channels, the
slave stays in PIO mode even though I have set it to DMA when
available. The drives are certainly capable of supporting DMA. Is
there any way to force Windows to recognize this?
I have checked my bios....ok there
I have uninstalled the IDE channel in Device Manager and
rebooted....didn't work
I have changed the registry to EnableUDMA100....didn't work (also
tried 66)
I have deleted SlaveIdDataChecksum in the registry and
rebooted....didn't work

One peculiar note: in device manager I see two identical Intel Ultra
ATA storage controllers...would it be safe to try and uninstall
one?...maybe there is a conflict

Any help is much appreciated.
Thank you
Click to expand...

http://support.microsoft.com/default.aspx?scid=kb;en-us;817472
 
IDE ATA and ATAPI disks use PIO mode after multiple time-out or CRC errors occur
http://support.microsoft.com/default.aspx?scid=kb;en-us;817472

--
Carey Frisch
Microsoft MVP
Windows XP - Shell/User
Microsoft Newsgroups

-------------------------------------------------------------------------------------------

:

| So far I have tried just about every suggestion I could find...
| For both my CD/DVD ROM drives and my hardrives IDE channels, the slave stays
| in PIO mode even though I have set it to DMA when available. The drives are
| certainly capable of supporting DMA. Is there any way to force Windows to
| recognize this?
| I have checked my bios....ok there
| I have uninstalled the IDE channel in Device Manager and rebooted....didn't
| work
| I have changed the registry to EnableUDMA100....didn't work (also tried 66)
| I have deleted SlaveIdDataChecksum in the registry and rebooted....didn't work
|
| One peculiar note: in device manager I see two identical Intel Ultra ATA
| storage controllers...would it be safe to try and uninstall one?...maybe
| there is a conflict
|
| Any help is much appreciated.
| Thank you
 
Thank you for the responses. As per MAP's link i have not yet tried adding
ResetErrorCountersOnSuccess to the registry. Will do that next. But, I was
wondering if there were any settings that you can just force dma instead of
dma if available. I read somewhere (i think on an earlier edition of
windows) that there were registry values that corresponded to this. e.g. 0
for pio, 1 for dma always, 2 for dma never. (or something along those lines)
 
Got it working. It turned out that I overlooked a BIOS setting. Apparently
on dell computers the bios has secondary devices set to off. I needed to
change that setting to auto. Thank you for the help.
 
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