With its standard settings, Windows routes the data from the hard disk or CD-ROM drive via the processor to the main memory. This puts a strain on the processor because it has not been optimized for this type of computing and so the speed of such operations (and these are the majority in a conventional everyday system) is greatly reduced. In addition to low transfer times, the mouse also jerks and the system can become unstable.
This is where the DMA mode (Direct Memory Access) comes in handy as, as the name suggests, it shovels the data directly into the main memory and thus largely bypasses the processor. This setting is often switched on, but on some systems Windows is not sure whether the drives support this mode, which is definitely the case with today's computers. I generally recommend checking or activating the DMA mode. And this is how you proceed:
1. Click with the right mouse button on Workplace and select the entry Properties.
2. Now switch to the tab Device Manager and click on the plus sign in front of CD-ROM. Now double-click on both entries one after the other.
3. A new properties window appears for each entry in which you can select the Settings to bring out. Now click to tick the box in front of DMA and confirm with OK.
4. After this click, the window closes and you are back in the Device Manager, where you can now add the plus sign in front of Drives click.
5. Here, too, you can check all entries and ensure that the Settings the DMA mode is activated.
6. After a restart, the data no longer rushes through the troubled processor but flows to the RAM at lightning speed, which means a significant increase in speed. If the plus disappears again in the settings after the restart, your drive does not support DMA mode (which can only happen with older models). In this case, go to the manufacturer's homepage and ask for a firmware update. We will be happy to help you in the forum.
NOTE FOR NEW PUBLICATION: This article was produced by Sandro Villinger and comes from the Windows tweaks archive, which has been built up since the late 1990s.
