My guess is your user has read permission on the source files/dirs but not write permission. So while it was able to copy the files, it was not able to remove the originals since you don't have the permission to do so. Were there any errors printed on the terminal?
In my experience, when moving a large directory like that, it's a much better idea to use "rsync -a" to copy it to the destination, and once you've verified it's there and everything works correctly, you can remove the source manually. This way if there's a network interruption, system interruption, power outage, etc. you can always pick up the copy where it left off without risking some files not making the transfer. If the transfer gets interrupted part way through you just run it again, whereas with an mv there are always questions. Which files/dirs have been fully transferred? Which have been partially transferred? Which ones do you want to move again to overwrite what's there? Are there any dirs on the destination that have already been moved over and deleted off the source? Or are they still on the source? etc. You also separate the copy from the deletion, so in case there are write permission issues like I mentioned could be the case here, you don't run into it until you go to delete, after you're already sure everything has been copied over properly.
Last edited by suicidaleggroll; 07-01-2014 at 04:46 PM.