Enable Ultra DMA in Win2k

Ultra DMA doesn't seem to be enabled by default in Win2k. To check the current transfer mode (if you have an Ultra DMA hard drive):

Go to Device Manager >> IDE Controllers.
Select a controller and click on Advanced Settings.

Now have a look at the current transfer mode. If its not Ultra DMA and your system supports UDMA, you can enable it in the registry via this key:

HKEY_LOCAL_MACHINESystemCurrentControlSetControlClass{4D36E96A-E325-11CE-BFC1-08002BE10318}0000

Create a Value with the name: EnableUDMA66.

Make it a data type REG_DWORD.

Give it a value of 1.

You can use the "Find" option in Regedit to find the above mentioned key by the way. Remember to only edit the registry if you are sure of what you are doing! And back it up first.


This was first published in September 2001

Join the conversationComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.

    Disclaimer: Our Tips Exchange is a forum for you to share technical advice and expertise with your peers and to learn from other enterprise IT professionals. TechTarget provides the infrastructure to facilitate this sharing of information. However, we cannot guarantee the accuracy or validity of the material submitted. You agree that your use of the Ask The Expert services and your reliance on any questions, answers, information or other materials received through this Web site is at your own risk.

    Back to top