I have an interesting situation with a client. She has a Dell and HP Envy Laptop. She logs into both of them with the same Microsoft account.
On her Dell she has "OneDrive" showing up and all her folders and documents are there. She can also click on her "SkyDrive" app and has the same folders and documents.
On her Envy she has "OneDrive" showing up, however her folders and documents have not synced. When she clicks on her "SkyDrive" app she has all the synced folders and documents.
She has Office 365 on both computer...not sure if that makes any difference.