I've seen the other questions about this same topic but mine might be slightly different. I was using Lightroom 3 on my old pc and am going to use lightroom 5 on the new one. he old pc was running out of hard drive space and I was desperately trying to make room so that it would just be able to run. In doing that I moved files from the hard drive to external drives and some of the lightroom folders/files may have been separated from others.
My questions are.....Do I first attempt (is it even possible?) to get LR3 and all it's files transferred over to the new pc and is there somewhere I can go that will show me which files are supposed to be in which folders (previews, settings, presets etc) and then upgrade to LR4 or should I first install LR4 and then attempt to move stuff over?
TYIA and sorry if this is confusing.
You can just move your images and your user files (catalog, previews, etc.) and install Lightroom 5 on the new computer. You will need your Lightroom 3 serial number as well as the new serial number for Lightroom 5. That's how you activate an upgrade version of Lightroom. You can have Lightroom 5 try to open your old catalog, and it will convert it to the Lightroom 5 database format automatically. Here is a link to instructions on what to do to move Lightroom to a new computer: