Certain CD-ROM discs make a vibrating noise when used in my iMac. What is causing this noise and how can I eliminate it?
It is normal to get a slight vibrating noise with certain CD-ROM discs when using a high-speed CD-ROM drive like the drive in the iMac. The artwork on a CD-ROM disc may cause the CD’s center of gravity to be slightly off center. Because the CD is spinning at such a fast rate, the CD will wobble, which in turn causes a slight vibration. This is perfectly normal and does not damage your computer or CD-ROM drive in any way. If you are using a CD with a removable, sticky label, remove the label prior to using the CD. Also install iMac CD Update 2.0. This software update improves the way the CD-ROM drive handles unbalanced CD-ROM discs. It may reduce the amount of vibration for most CD-ROM discs. The software is available from the Apple Software Updates Web site at http://www.apple.com/swupdates.