I was trying to copy a large amount of data from one drive to another drive in order to back it up. I did this simply by CTRL+C the top-level directories I wanted from one drive, then CTRL+P in the drive for backing that up, all within Windows Explorer. I let this process run overnight and upon return, I had the error that a folder could not be transferred due to file path length. I pressed skip each time to see how extensive the problem was and there were only 3 folders that were not moved for this reason.
The problem is, I don't know which folders exactly were not transferred. If I knew which directories couldn't be copied over the first time around, I could go address their path length or use (what I've only now learned about) robocopy to copy them. How can I know exactly which directories did not transfer? W
hat I copied consists of 1.5TB of data with many branching directories, so I doubt I can do this manually. Is there any log of what files were skipped, or a relatively easy way to compare the two top-level folders and see exactly what's missing?