If you follow the directions, you'll get an error about the new folder not being the original. Umm, isn't that the point of MOVING your folder? By definition, the new one isn't the old one even if it has all the same contents.
The problem and solution both lie in 2 files which you will find in the folder %userprofile%\AppData\Local\Google\Drive (for Windows anyway, not sure about other operating systems though I suspect the file names will match).
Those files are:
- Stop Google Drive Sync (right-click and Quit)
- Move the entire Google Drive folder (default is in Documents and Settings)
- Open each of the two files and do a find/replace from the old path to the new.
- Start Google Drive
- Be done (NO SYNC REQUIRED)
Related: Recent issue I had, Google wouldn't resolve and I figured out myself. "Google Drive Failure Comes to a Head ... Read More"