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ATA Ultra DMA Mode Notes:

1. DMA Mode for ATA-ATAPI Devices in Windows XP:

   To enable DMA mode using the Device Manager

   1. Open Device Manager.
      
   2. Double-click IDE ATA/ATAPI Controllers to display the list of controllers and channels.
      
   3. Right-click the icon for the channel to which the device is connected, select Properties, and then click the Advanced Settings tab.
      
   4. In the Current Transfer Mode drop-down box, select DMA if Available if the current setting is "PIO Only."
      If the drop-down box already shows "DMA if Available" but the current transfer mode is PIO, then the user must toggle the settings. That is:
      
      • Change the selection from "DMA if available" to PIO only, and click OK.
      
      • Then repeat the steps above to change the selection to DMA if Available.
      
2. DMA Mode for ATA-ATAPI Devices in Windows XP:
3. 327805 - Ultra DMA Mode 6 Devices Are Not Enabled on VIA Motherboards After You Install Windows XP SP1:
4. 813861 - Windows XP Service Pack 1 Incorrectly Identifies the VIA ...: VT82C686B Chipset as Supporting Ultra DMA Mode 6 instead of Ultra DMA Mode 5.
5. www.seagate.com - Ultra ATA-100 FAQ:
6. www.seagate.com - Technology Paper on Ultra ATA: ATA/66
7. 262448 - Disk Error 11 and ATAPI Error 5 Using DMA Transfer Mode for ATA66 Hard Disk: Win2000
8. 159560 - DMA Check Box Does Not Remain Checked: Win9x Ver
9. Download details Windows 95 OEM Service Release 2-2.1 Updated ESDI_506.PDR: Win95
10. 171353 - Computer with Ultra DMA IDE Controller May Hang: Win95 OEM SR2 & Win95 OEM SR 2.1
11. 63937 - VDS.exe Demonstrates DMA in Windows 3.0: Windows 3.0