Please read Getting Started: What Does “Import” Mean in Adobe Photoshop Lightroom? before proceeding with this tutorial.
Two new video tutorials today for beginning Adobe Photoshop Lightroom users on how to import and move files from one hard drive to another using Adobe Photoshop Lightroom. In my opinion, most photographers will get more joy out of Lightroom if they store both their index (the Lightroom Catalog files) and all of their photographs on an external drive. See My Photo Storage System: Two External Hard Drives for more details on my file storage philosophy.
These videos are intended to help new Lightroom users find their photos, or the folders full of images, that currently live on their internal hard drive. Most beginning users need the extra help with this process and its great to know that Lightroom can do all of the heavy lifting. Once we have found these folders we can use Lightroom to copy, or move, these files over to an external disk. Before you start this process though I suggest reading all of the posts on how Lightroom works, and on how to best set up your preferences, in the Getting Started Right with Lightroom 3 section of our website. You will want all of these settings and templates in place before you start moving lots of files around with Lightroom.
If you are needing help with importing I urge you to also watch this tutorial on how to build an Import Preset in Adobe Photoshop Lightroom 3. An Import Preset can make life simpler and make importing new files far more efficient.