OneDriveMapper automatically map your OneDrive for Business upon login
On Windows 7:
1) ensure https://*.sharepoint.com is in your IE list of trusted sites or intranet sites, and security is set to low.
2) map to drive letter in Windows Explorer, using the following syntax:
\\ORGANISATIONNAME-my.sharepoint.com\personal\USER_MYDOMAIN_COM\Documents
You can get this information from logging into Onedrive and looking at the https URL, but you must reverse the slashes and use the format above, not the URL.
3) On the dialog box, check both checkboxes for: Reconnect at logon, and Connect using different credentials.
Sources:
https://gallery.technet.microsoft.com/office/OneDriveMapper-automaticall-d7d498b0
https://imss.caltech.edu/node/1337