Enabling/ Checking DMA In Windows 9x/ME
The first thing to do is to right click on “My Computer”. Once you have right clicked on it then choose “Properties”.
The next thing to do is to click the “Device Manger” tab at the top of the screen.
Under device manager you need to find your hard drives and CD-Rom drives. These are normally found under “Disk Drives” and “CDROM”. Under this you will have a number of items. You can ignore the floppy disk drive.
To bring up the next window you will need to double click on one of the items. We will take one of the hard drives first.
The next thing to do is to click the “Settings” tab at the top of the screen.
This is the screen that will come up. In the “Options” box you should be seeing a tick in the box next to “DMA”. If not then you need to click in the box to put a tick there.
To finished simply click the “OK” button to exit the windows.
A screen may come up saying that you will need to restart your computer. You will have to for the settings to take effect. Before you do though you will now need to check your other drives.
Now you will have to reset your computer for the changes to take effect.
If when you have restarted the computer one of the channels is back on PIO-Only mode the last thing you can try is to uninstall the channel from the Device Manager window. When you then restart the computer it will force windows to reinstall the drivers and hopefully use the DMA if available mode.
(Added note: DO NOT delete the IDE channel if your hard drive containing Windows is also on that channel! An alternative to deleting the channel can be found in this thread. -C64K)