As subject states: I have files stored on an external USB drive. When remounted / reattached to the PC, it on many occasions has a different drive letter assignment. I can manually locate images within the catalogue - but the folder by folder "find nearby missing photos" makes the process very slow.
Is there away to point the catalogue to the newly lettered drive?
I've used several iterations of Lightroom, but currently use CC.
Hopefully, you have all the images arranged in folders within one master folder on that external hard drive. When you reattach and the drive has a different letter, in the library module right-click on the topmost folder and choose the option to "Update folder location". That will enable you to point Lightroom to the folder where it is now located.
You'd be wise to give the drive a letter near the end of the alphabet, like W: so that it most likely will never change again.