However, over time, with data accumulating, OneDrive may take up more and more space on the C drive which finally causes the C drive full issue and in return, this issue worsens your PC’s performance and slows down system speed. Users can also upload Microsoft Office documents to OneDrive. It was first launched in August 2007 and it allows users to store files and personal data like Windows settings or BitLocker recovery keys in the cloud, share files, and sync files across different devices. Microsoft OneDrive which is formerly SkyDrive is a file hosting services and synchronization service run by Microsoft as part of its web version of Office. Why move OneDrive from C Drive to D Drive?