I usually use rewritable cd to bring the data stored in my college computers but for a few times i am having problem with it .

The cd is first quick erased and then writed but when it is opened and tried to copy that data , it doesn,t copy and shows an error message-"data cannot be read from sector(sector no. )".

can nyone tell me is this the problem in CD- Writer or the Rewritable CD or the method of quick erasing repeatedly .