Before reinstalling them, create links using
mklink, such that they appear to be in the right place.
The default locations will be automatically populated with your files after installation, and there should be no redundant uploading either.
Example, as requested:
Let's assume we're dealing with DropBox. This will apply to the others too, but for convenience I'll explain just the one.
- Stop DropBox from running (I think it is a Windows Service)
- Move the data from
D:\Cloud\DropBox. Don't copy, because the folder on the C: drive must no longer exist for the next step to work correctly.
- Create a directory junction* with
MKLINK /J C:\Users\Fortune\DropBox D:\Cloud\DropBox
- Check in Windows Explorer that the junction is there. It should behave like the real thing.
- Start DropBox again.
What happens is you fool your OS into thinking that the folder on the D: drive is where it always was.
When you then format the C: drive, the junction point goes away, your data is safe, and when you install DropBox again, you just recreate the junction point before installing it, to make sure it uses the existing data. No duplication or re-uploading required.
*(I've typed this edit on an iPad with no access to Windows, so I hope the MKLINK syntax is correct.)