DVDIdle.com
Language:
 
Home Products Download Buy Now Support Contact
 
 
 
  Windows 98, 98SE and Windows Me  
  DMA can be enabled by a checkbox in the CD-ROM properties in the Device Manager.  
   
 

Windows NT		  
  Busmaster driver from the chipset manufacturer must be installed.
Then you can use a utility from Microsoft called dmacheck to enable/disable DMA.
More information on this utility can be found at: http://support.microsoft.com/support/kb/articles/q191/7/74.asp		  
 

Windows 2000 and Windows XP		  
 

Right-click the My Computer icon on the desktop and then click Properties.



In the System Properties window, select the Hardware tab and then click the Device Manager button.



In the Device Manager, expand the IDE ATA/ATAPI controllers entry, either by double-clicking IDE ATA/ATAPI controllers or by clicking on the + next to it.

Select the appropriate IDE channel (Primary or Secondary). To get to the IDE Channel Properties window, either right-click the channel and then click Properties, or select the channel and click Action -> Properties in the menubar.



In the Primary/Secondary IDE Channel Properties window, select the Advanced Settings tab.

Choose either the Device 0 frame for the master device on the channel or the Device 1 frame for the slave device on the channel, depending on whether the drive for which you are trying to enable DMA is master or slave. Click the Transfer Mode pull-down menu. Select DMA if available. Then click OK.

To verify that DMA was indeed enabled for the drive, again select the appropriate IDE channel, open the IDE Channel Properties window and select the Advanced Settings tab. The Current Transfer Mode box should display Ultra DMA Mode 2 if the drive can handle this, or Multi-Word DMA Mode 2 if the drive does not support UDMA. If DMA was not enabled, it will say PIO Mode.


 
 

Problems with DMA		  
 

If you can't enable DMA in Windows 2000/XP, please try to delete the according IDE channel and reinstall it to resolve the problem:
Uninstall the IDE channel (right click Primary/Secondary IDE Channel -> Unintsall), then scan for new hardware (Action-> Scan for hardware changes), and let windows redetect and reinstall the IDE channel and the devices on it. Usually after this operation selecting "DMA if available" enables DMA.

  
  If you have an Intel chipset based motherboard then you should not have any problems using DMA.
Chipsets from other manufacturers can give you many problems, especially VIA chipset based motherboards are known to cause problems with DMA settings. In this case you should install the latest busmaster driver from the motherboard manufacturer or from the chipset manufacturer. Changing the IDE setup by moving the drive to another IDE channel may also resolve the problem.

  
  Microsoft has a few very interesting articles on DMA.
If you have any problems using DMA you should definitaly read them.
DMA Mode for ATA/ATAPI Devices in Windows XP		  
 


Home  |  Products  |  Download  |  Buy Now  |  Support  |  Contact  |  Free Stuff
©2001-2008 Fengtao Software Inc. Webmaster Affiliate Program