I have a new SSD with over 1TB of space. I've started exporting my library in Lightroom to this SSD and was able to get about 20GB worth out of 40GB of all my photos. For some reason I get an error from Lightroom saying that my device is "Low on Disk Space" even though I have over 900GB of space available. Any help on what's preventing me from exporting is much appreciated.
We're sorry about the trouble while trying to export the images from Lightroom. Would you mind telling us if you are trying to export all the images at once? If yes, how much space do you have on the computers C: drive?
Since Lightroom creates some temporary files while exporting the images, if your storage on the C: drive (which Lightroom uses by default to create cache) is low, you might run into this error. Try exporting the images in small batches or clearing some space from the C: drive to check if that helps.