My iMac G5 is 1 year old. Recently, I mistakenly loaded a blank DVD into the slot superdrive but was then unable to eject it using the eject button on the DVD player. The G5 does not have eject on its keyboard, nor a pinhole re-set. Holding down the mouse on re-start did not work Open Firmware similarly did not work (message was unable to open eject) Hardware then listed no dvd burner present and peculiarly Macintosh HD (desktop) said 148.93 GB. 11 GB free (?)- there was actually 128.1 GB free as shown in the system info. I tried disc Firstaid to verify the hard disc. This stopped, with the message "uncompleted task". Extremely worried that I may have a virus (Apple network file-sharing had been open), I took it to a computer firm with Apple technicians. The report was "removed disc from optical drive, powered up, drive accepted but would not read nor eject disc - new drive required" and the G5 handed back with the disc still inside! As I was charged $104 for "diagnosis" I insisted that the disc be removed. When I started the computer again, it made a sound like a disc eject, then Hardware listed the superdrive's presence and the correct amount of used disc space appeared on the desk top. Can anyone please advise if there is anyway to test the functionality of the superdrive? I read in the Forum that it may not have been aligned correctly, so perhaps its removal and replacement by the technician may have corrected this (?) I'm not game to insert another disc to try it!!