I just tried to access some files on an old data back up DVD but Windows 7 won't let me open the disc, it just says "Application not found".
Under the disc name it's got UDF. I can read the disc on my old PC with the drive that probably burnt the disc in the first place but it was definitely finalised at the time.
Thinking it was a one off I just checked a random selection of old back ups from 2003, 08, 09 and some more recent ones I can't read them either. In fact I don't appear to be able to read any DVD-R's or CD-R's at all.
I used to keep back ups of games I bought on Steam but I stopped doing that when I realized I didn't really need to do that. And for general data back ups I use external HDD's now anyway, but I still want the data on these discs.
And I just tried opening a music CD, one I made of my own music and I can't open that either yet it plays in iTunes and WMP. It says CDFS under the name in My Computer.
The drive is a cheapo Super Writemaster, given to me when my Pioneer DVD/CD-R/RW started to fail (though it's still going strong in my old PC and reads ALL my discs without a problem). The Writemaster runs games okay and retail music albums just seems to have a problem with discs that had data burnt to them.
I don't know if it's the drive, my motherboard, an update to Windows 7 or what (my old PC has Windows 7 on it too and reads all the discs fine).