Finally I decided to register now that I have a problem. I have been reading the forum forever, but my new drive has forced me to come for advice.

I recently purchased the Optorite dd0401 and installed it in an aluminum external enclosure purchased from CompUSA. Connecting with firewire, my laptop recognizes the drive in Nero as "OPTORITE DVD RW DD0401." Today I purchase some TDK DVD+R47CCB15 4x discs that optorite claims will burn at 8x. When i insert one of these dvd+r's nero lets me select 8x as a burning speed, but it takes 13 minutes to complete the disc (4x). My problem is exactly the same as Harp in the this thread http://club.cdfreaks.com/showthread.php?threadid=81434. Nero tells me the burn will be finished in 6-7 minutes but doesnt finish until 12-13. Both my primary and secondary IDE channels have "DMA if available" enabled. My secondary channel is connected to an internal CDRW. I don't think the problem is with the enclosure because the manual says that it "supports 16-bit multi-word DMA mode and Ultra DMA mode interface (Ultra 33/66/100)."

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As if things weren't bad enough, I ran a few more tests later this afternoon. I have only successfully burnt DVD-video and CD-ISO discs in Nero. Nero freezes when attempting a HD-burn and stops at 4% when trying to burn a audio cd. The disc will not eject from the drive and the computer will not shut off through windows. I have to power off the computer and drive manually, and open the disc tray manually to retreive the disc. When trying to rip a DVD in DVD Decrypter only the video_ts.bup file rips and DVD decrypter continues to count, but no files are ripped.

Maybe the problem has to do with ASPI or something. I am using Windows XP. Any help is greatly appreciated.