Google Drive / Getting Started with Drive 

Upload a folder to Google Drive

As well as uploading individual files, you can upload an entire folder of files in a single step. Once complete, a new Google Drive folder will be created that has the name of the original folder you uploaded. Any subfolders will show as sub-folders, and all documents will remain in the same sub-folder as in the original.

To upload an entire folder of documents into Google Drive:

The Upload pane will show the progress of the folder upload - click on Cancel at any time if you want to cancel the current upload.