I want to use a OneDrive folder as the location to which Time Machine backs-up my internal drive. I'm pretty sure that Time Machine can't back-up to a cloud drive that is mounted on the volume that it is backing-up because it creates a loop (that is why I would mount the cloud drive on an external drive that Time Machine is not backing-up).
If my internal drive fails then:
- get a new drive.
- do a fresh install of OS X.
- attach any external drive.
- install OneDrive and mount the OneDrive cloud drive on this external drive.
- point Time Machine at the OneDrive folder.
- tell Time Machine to restore.
- done.
I can rest safely knowing that is how it would work? Or, am I about to make a devastating mistake that leaves me with no Time Machine protection?
Best Answer
Theoretically it should work ok.
Note that you cannot specify a folder as the Time Machine backup destination. You'll need to create a sparse bundle by following these steps, from a MacRumors thread:
In Disk Utility, select File > New Image > Blank Image.
Enter your desired filename and set Where to your OneDrive folder on the external drive. You can choose the size here, too.
Ensure Format is set as OS X Extended (Journaled), and Image Format is "sparse bundle disk image".
Once it's created, unmount the bundle by clicking the Eject button next to it in the list on the left.