Can I do it? Or will it delete the file from the passport when I delete it from my computer intentionally? I would like to keep my photos only on the passport to free up space on my computer. Will that work?
Before you delete your photos from the internal hard drive.
Please make sure that you have verified all of your photos are play back correctly from the WD MyPassport drive.
If after you have done that and you are sure, deleting photos from the internal drive will not effect the WD external drive.
FYI: It is a good idea to keep your valuable files or data on multiple places, incase one failing.