Tag Archives: cd

How to Clean a CD

I’ve seen a lot of people clean CDs completely wrong. There’s a good reason why most libraries and video rental stores have labels on their discs telling people not to try to clean them—if you do it wrong, you have a good chance of permanently damaging the disc.

There are a lot of ways to clean a CD, but first, here’s how not to clean a CD: Do not rub around the CD in circles. This can cause further scratches. (Furthermore, circular scratches are the most likely to cause permanent data loss, as they wipe out a large amount of consecutive data. Most systems have an error-correction algorithm that can compensate for a small amount of consecutive unreadable data, such as when the disc scratches from the center to the edge.)

Here are two acceptable ways:

  • The simplest way is to take a soft cloth and some CD cleaning solution (lens cleaner is almost the same stuff, and is often advertised as both), spray a bit of solution onto the cloth (I’ve heard that you’re not supposed to spray it on the disc, although I’m not sure why), and rub the CD gently from the center to the outside of the disc. Then turn the disc slightly and repeat. As mentioned above, don’t use any other pattern.
  • Another common method is to run it under the tap and then wipe it off gently (from center to edge, of course), or let it air dry. Some people recommend taking it into the shower, which does essentially the same thing.
Even if you have to use your T-shirt to wipe off the disc because you don’t have anything else handy, please remember: center to edge, not in circles. It pains me to see people rubbing CDs all over their scratchy jeans in random patterns thinking they’re making it better.

If a disc is badly scratched, many people report getting good results by rubbing toothpaste all over the disc, letting it sit for a few minutes, and then cleaning it off. The idea is that you wear off a thin layer of the non-scratched portion of the surface, thus making the scratch shallower. This is not something to try unless the disc doesn’t work anyway and you realize that you might destroy it completely.

How to Remove a Stuck CD From Your Drive

Ever gotten a disc stuck in your CD drive? It doesn’t happen often, but it can get really annoying. Sometimes rebooting will fix the problem, but rebooting can sometimes take a long time and doesn’t always even work. Here’s an easier way.

Warning: Do not attempt to use this technique if the CD drive is in use! You will very likely damage the drive and/or the CD. If you’re not sure if the drive might be in use, you should first power down the computer. Standby mode is fine, though, which might save you a good bit of time (on Windows 7, you click the arrow next to the “shut down” button to access standby).

To actually eject the disc, all you need is a paperclip. You’ll need to unbend it at least to the first bend, and probably to the second if you have a small paperclip. If you hold a paperclip up to the screen, the extended portion should be at least as long as half the extended portion in this image:

Locate the release hole on the front of the drive and push the tip of the paperclip in firmly as far as it goes. The hole I’m talking about is the little round one above the light.

If you’re lucky, as in the above picture, the drive will pop out enough so that you can grab the tray and slide it out carefully; however, sometimes the drive will stick in a spot where you can’t quite hold onto it. Fortunately, there’s an easy fix: flip the paperclip around and use the other end to pry it out:

Besides removing stuck discs, I use this trick to insert boot discs in computers that are currently turned off; it’s nice not to have to power the system on just to get the CD tray open.