If your drive says Samsung SDG-605 whatever designed by toshiba it is a Rev. F. These drives do not read any CD'R at all and can be quite picky with other media. The LG drive is essentially the same as a SDG-605F in terms of media compatability. To tweak the philips, find the model # on the drive. Both models, the VAD6011/21 and the VAD6035/21 can be tweaked by turning the left pot counterclockwise. For the 6011, I took off 200 ohms, but I suggest you try incriments of 50 at a time until it reads CDRs. For the 6035, I reccomend that you do not turn it down more then 150 ohms. 75 ohms off set it fine. The 6035 laser is much more sensitive then the 6011, so tweak with caution. Always write down the original value so if it fails, you can fall back to it. I have found that some Philips drives will read just as good as a Samsung if it is tweaked right. Even the Thomsons can be tweaked, that might be a fun project. See XBox-Linux.org under the CD/DVD burning HOWTO section for tutorials. And remember, TWEAK WITH CAUTION!!

if i'm running games or movies from the HD, will it matter if my dvd drive (thomson) cannot play cd-r's? thanks!