Hi, Shane
But whenever i insert a bland cd or dvd, a message pops up to say how i want to treat the said cd or dvd. The options are pendrive or as a written disc media. If i select, pendrive, then i just can use the cd r or dvd r as a pendrive, where you could add or delete file as normally as in pendrive in the CD thus selected. I tested and i was able to delete the contents in cd as in pendrive.
If i select the 2nd option, then it is only for writing once as in every dvd or cd r. I think that this option is available from xp onwards.
am I correct, Shane. One more point. You could not revert the change, in that you cannot make it burn then if you select it as pen drive.