Had a request to quickly confirm whether a user had OneDrive. I couldn’t be bothered to activate my admin roles to check properly. So here’s what I did.
I went to https://<tenant name>-my.sharepoint.com/personal/<upn> where <upn> has all special characters replaced. Thus firstname.lastname@mydomain.com becomes firstname_lastname_mydomain_com.
If the user has a OneDrive you will get an access denied message but if the user does not have OneDrive you get a different error.
 |
 |
| No OneDrive | Yes OneDrive |