Welcome to the forum.
Can you provide us with a bit more information, please?
What version of PrE are you using?
What OS version are you running it on?
What is the disc in the external DVD drive, i.e. a DVD-Video, or a DVD-Data disc?
Good luck, and please let us know a bit more.
Bill: I have Mac Book Pro with Retina Display and have Adobe Premiere 12, the latest on the market. I have a external DVD drive and and a DVD recorded on a regular DVD recorder connected to a Panasonic HD Camcorder. The Premiere 12 does not even recognize the external DVD drive and I have to copy the TS files from the Recorded DVD on to the hard disk to import. It will be great if I can directly import the TS files form the recorded DVD from the external DVD drive since the Mac Book Pro does not have an internal optical drive. Please help.
I do not believe you have a choice with regard to obtaining VOBs (video files) from DVD-VIDEO when it comes to a Mac computer without an internal superdrive.
The Adobe documentation points out
"On MacOS Video Importer does not list external DVD drives. Use internal Supedrive in this case."
So it looks like you are forced to continue with what you are doing, copying video files from the DVD-VIDEO, saving them to the computer, and then using Premiere Elements Add Media/Files and Folders to get the files into a Premiere Elements project.
Please excuse the question, but I did not want to take anything for granted that might put you at a disadvantage.
You write that you "copy the TS files from the recorded DVD on to the hard drive to import." The DVD-VIDEO video files are VOB files (like VTS_01.1.VOB) found in the VIDEO_TS Folder of the DVD-VIDEO. Is that what you are using?