Lifetime of a CDROM disk - Comments

I think you should clearly specify to NOT directly put water on a cd-rom, if the external coating is not perfect (and very often it is not on the edges) humidity can get on the recording layer with the most unpredictable result (or with very predictable result). At least this was what I came to know when looking for infos on how to have a perfect storage copy of my stuff. I rather use just a slightly moisted SOFT cloth. I think it is much better if you really care to keep the aging of the media under control using a software like http://freshmeat.net/projects/dvdisaster/ (actually the web site of the creator is no longer available, but you could find the tool around with google).

Hello. If you decide to go the car wax route, I highly recommend Kit™ Scratch Out that comes in the bright yellow bottle. I suspect that it has an abrasive that is even finer than that found in tooth paste. To get the deeper scratches, you may have to use a buffing wheel. And if you hold the disc up to the light and can see dots or scratches where it is coming through, that means the metal substrate which has the information on it has been scratched. You may not get some of your files back in that case.

The old Crest toothpaste and tiny swirling circles trick.... my how this brings back memories of how to get scratches out of glass and more importantly motorcycle helmet visors! Yup, it worked well.

I know this sounds like a D'uh but perhaps you should remind readers that the surface they should be "attacking" is the side opposite the label! I can see it now someone will abraid the label surface off of the CD then will complain that they can't read the CD (Who knows they may even get a Lawyer to take on the case). Many moons ago I scratched the label of a music disk - rendering certain tracks unplayable. However through the judicious use of an opaque material (white out) I was able to copy the disk for my continued enjoyment (Legal disclaimer goes in here).

THe advice about reviewing storeage media is "right on the money" How many still have DAT readers? How about Colorado Tracker units? All of which at one time or another touted as the ideal back up media. And even showing my "experience" the introduction of the great method of distributing data and applications the Curzon Strip reader.

In the case of a storebought Elton John music CD that had been used as a coaster, I used cotton balls and no abrasive to polish out the gouges in a radial motion. A dremel with a cotton buffer wheel would've worked, but the idea here is to melt and reflow the plastic and a dremel works very quickly. If you have a light exacting touch the dremel would work. The CD was copied once it could be read again. Note there is a big difference between commercial CDs, burnable CDs, and re-writable CDs. And there is a big difference between CDs and DVDs, as concern longevity of stored data, apparently.

Yup, toothpaste has worked for me too. So has Turtle Wax and Meguire's Mirror Glaze (Liquid car wax). BUT, the main comment I have is that not only are CDs sometimes not reliable, their days may be numbered.

You're right when you ask "When was the last time you saw a computer with a 5.25 inch floppy drive?" I've read that starting in 2007 some car manufacturers will no longer equip their cars with CD players -- they'll have USB ports (in the glove box)! Just how many CDs worth of tunes can you put on a 512M USB stick? I really like the idea of not having to fumble around with CDs. A good MP3 player that can access a USB drive (or an iPod) makes so much more sense!

I used a clean cotton cloth scrap with the CD upside down in jewel case to hold without further damage. Will try your tooth paste method next time. Thx!

Remember that the marking pens or paper labels can degrade your data. There is a great page on CDs at http://en.wikipedia.org/wiki/CD-R

i tried an informal "advanced acceleration" test of a CD-R recently. i left a TDK CD-R filled with JPEG images out on a window facing the sun for about 6 months. it was not readable by my CD drive, but the surprising thing is the software considered it a blank CD-R. it even passed the testing phase. i'll try and burn something to see if it actually can be re-burned.

For more on makers see:
http://www.cdrfaq.org/faq07.html#S7-4-1

Also, Amazon has a good page summarizing tests. Can't find the page now, but they place Mitsui first (especially the Gold with blue dye), Maxell, then Fujitsu. The Maxell result contradicts what the above link mentions but I suspect that has more to do with the actual maker. Much like they mention for Verbatim, not all media from the same brand are made by the same factory.

Mitsui are hard to get in Canada so I've been using Maxell with good results. Definitly stay away from cheapos.