


You could disable the optical drive in the BIOS (F2 at Dell Splash Screen on Startup > System Configuration > Drives), however as Steven's pointed out, a pupil with a paper-clip could open the drive that way. I've had a look for blanking plates for the Optiplex 9020 AIO Optical Drive slot but there does not seem to be anything available unfortunately. Please see the service manual here (pages 17 to 19). The optical drive does have cables so these can be removed.

Regarding the Optiplex 9020 AIO, opening the systems will not invalidate your warranty. However, this does seem to stop the drive from opening if the eject button on the DVD drive is pressed once Windows has loaded so it is a partial fix if nothing else. You're right about it not stopping users opening the DVD drive before Windows loads (after all, it is a program that relies on Windows being loaded). Dell Studio 1558 How to Eject a CD Using Testing Utility: Boot up the. How would this stop the physical eject button from working, especially before Windows starts to load? I took the Studio Hybrid apart and removed the DVD drive (screw on outer case.
