Enable/Disable DMA in XP?

[mimo330ci]

How do I enable and disable DMA in XP?

My Sony DRU-500a says I have to disable this to install the latest firmware.

Thanks!
-Alex

[donpedro]

let me think...

Device Manager
IDE ATA/ATAPI controllers (choose prim. or sec. based on wher it is)
Advanced Settings

Theeere you go. You should see it by now.

[donpedro]

Ooohhh !! Try to run it in safe mode... it is safer

[mimo330ci]

let me think...

Device Manager
IDE ATA/ATAPI controllers (choose prim. or sec. based on wher it is)
Advanced Settings

Theeere you go. You should see it by now.

I am there and don't see an advanced settings tab or button... ??

[donpedro]

Write me exactly step by step where you click and what do you see...

[donpedro]

By the way.... it's funny but microsoft have support web page too

http://www.microsoft.com/hwdev/tech/storage/ide-dma.asp

[hwoodwar]

You probably have to be logged as administrator (XP Pro) or owner (XP Home) to see that page. Also, make sure you are doing the properties on the Primary IDE or Secondary IDE Channel (not IDE ATA/ATAPI controllers) as donpedro mentioned.

[mimo330ci]

Write me exactly step by step where you click and what do you see...

1. Going to device manager
2. Expanding IDE ATA/ATAPI controllers
3. Right clicking on Secondary IDE Channel
4. Properties
5. I see the following tabs: General, Driver, Resources

No Advanced tab.... !?

-Alex

[donpedro]

let me think...

Device Manager
IDE ATA/ATAPI controllers (choose prim. or sec. based on wher it is)
Advanced Settings

Theeere you go. You should see it by now.

Well.... I was just trying to save some space here... I thought that it is obvious... my bad...

But that Microsoft link is fine

[donpedro]

5. I see the following tabs: General, Driver, Resources

No Advanced tab.... !?

Hmm !!! Try start PC in "Safe Mode". I am not sure but it is possible that it will be disabled by default and I think that if you start it in Safe Mode, you have to log in as Administrator. So as they say in my country "You will kill 2 flies with one shot".

[donpedro]

I have realy fun with this one... Who could believe that my Win2000 help will have answer for this.

To change IDE controller settings

Open Device Manager.
Double-click IDE ATA/ATAPI controllers, right-click the IDE device for which you want to change advanced settings, and then click Properties.
On the Advanced Settings tab, make the desired changes.
Notes

You must be logged on as an administrator or a member of the Administrators group in order to complete this procedure. If your computer is connected to a network, network policy settings may also prevent you from completing this procedure.
To open Device Manager, click Start, point to Settings, click Control Panel, and then double-click System. Click the Hardware tab, and then click Device Manager.
The Advanced Settings tab may not appear for all IDE controller devices.
Some of the advanced settings for IDE controllers are device dependent. Read the device manufacturer's instruction manual to determine which settings you can change.
You will not be able to change the setting in Device Type if Windows 2000 has already detected an IDE device on an IDE channel. This prevents you from selecting None, which would disable the IDE device. If you want to disable the device, see Related Topics.
If you are not an administrator or a member of the Administrators group, you can use Run as to perform certain administrator functions. For more information on how to use Run as, see Related Topics

[mimo330ci]

5. I see the following tabs: General, Driver, Resources

No Advanced tab.... !?

Hmm !!! Try start PC in "Safe Mode". I am not sure but it is possible that it will be disabled by default and I think that if you start it in Safe Mode, you have to log in as Administrator. So as they say in my country "You will kill 2 flies with one shot".

Could be that I have Intel Application Accelerator installed.. trying to uninstall it now as it says to do so in the Sony support site.

[mimo330ci]

Could be that I have Intel Application Accelerator installed.. trying to uninstall it now as it says to do so in the Sony support site.

Yup... uninstalled Intel Application Accelerator and now I have the advanced tab...

Thanks guys!
-Alex

[donpedro]

BINGO !!! Those special drivers ...

[solsystem]

Hello,

This was posted on the Intel website in regards to their application accelerator:

Automatic Selection of Highest DMA Transfer Mode

Intel Application Accelerator automatically enables the highest transfer mode supported by the ATA/ATAPI device and Intel chipset. For example, a CD-RW drive that supports a maximum of UDMA-2 will be set to this mode with no interaction required. Two devices that are on the same ATA channel can even be using different transfer modes.

Is this better than enabling the DMA function?

Thanks

[donpedro]

You missed point here. He needed to DISABLE it.