This error can be caused by packet writing software like "Sonic Solutions DLA" or "Roxio DLA" (DLA = Drive Letter Access).
You can check if your system has DLA installed by right-clicking on your DVD drive and selecting Properties from the context menu.
If there is a tab called DLA, then DLA is installed and you will have to uncheck the box that says Enable DLA on your drives (see screenshot).
If you start the installation again afterwards it should finish without errors. After successful installation you may enable DLA again.
If your CD drive properties do not have a DLA tab, then use the following steps to turn off DLA:
- Determine the drive letter of your CD drive. For this example it is E:.
- Open the Windows Start menu.
- Click on the Run... button.
- Type in "CMD" and press Enter.
- In the command window, type in: "DLA.EXE disable E:"
- You will see a message saying that DLA is disabled.
Now restart the installation from your install disk.
When you are done installing, you can turn DLA back on using the same steps, except that in the command window you type in "DLA.EXE enable E:".