Upload is what such is called and using that function seems a very good way to do it.
https://support.google.com/drive/answer/2424368 tells how: install the app, drag files or folders to the local Google drive folder and wait till it's synced to the cloud.
But for most people, copying 3.2 GB to a USB-stick (see your other post) is much faster, especially if it's a USB 3 stick.
I'm trying to upload my MacBook Pro Photos folder's picture files (3.2 GB) to my Google drive.
Q. What is the best and simplest method to use to complete this task?
Note: I have used the google drive "file upload" function but it seems too slow or not to be working.
Your assist is definitely appreciated.