This could very well be a permission issue as you are introducing a new device to the system. But I'm not 100% sure. Let's see first whether the kernel recognizes the device:
Plug in your external cd-rom drive... just wait a few seconds for the device to settle down and type this:
Originally Posted by keymoney
..plz help me out with this problem as i want to prepare for rhce exam..
Installing RH with non-standard hardware configurations /is/ on the exam...
...no I dunno, but it should be