Hi! I keep my RAW photos on an external drive. I plug it in only for Lightroom use. I have LR5 now but just bought an update to LR6. I recently got a new machine I want to install LR6 on the new machine and then start using it. Is there a way to copy the photo developer settings and cataloges to the new machine? Thanks!
You can simply move the catalog from one machine to the other (lrcat).
You can also place the catalog on the external drive together with the RAW's and connect it to the Computer you want to work with.
Some reading for you: http://www.lightroomqueen.com/how-move-lightroom-to-new-computer/
Yes you can move the complete catalog and the previews to the new machine.
Also if all the files are already in external hard drive then Lightroom will not show you the missing photos icon.