You might want to copy some data out of it but you computer is unable to read from the cd.
So here is a tool for you CD Recovery Toolbox support almost all kinds of disks like CD, CD-RW, DVD-RW, DVD, HD-DVD, Blue-Ray disk etc. This tool actually works when it comes to recovering data from physically damaged CD's. So if you have any damaged CD or DVD and want to recover some data from it give this a try and i am sure you will like it.
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It is freeware and small in size. This tool allow you to copy the part which is not damaged. So if you copying some song which is not readable this software can copy this song but the unreadable part will be missing.
This can be useful because in windows even if some small part is unreadable it will not allow you to copy the whole file.