We have put together a short survey to capture your feedback in terms of what BT can do when you experience home Wi-Fi issues. We would appreciate it if you could take a couple of minutes to complete a short survey. Read more from here, Fix my home Wi-Fi
I've checked this with the Cloud team and they have confirmed it is not possble to put BT Cloud on another drive.
The BT Cloud Sync folder (key part of the programme) is always personal so needs to sit in the user’s home directory – on Windows this is always on the system disk which is usually C: drive. The installation folder for BT Cloud also automatically resides under the user profile on the hard drive (C:\Users\[USERNAME]\AppData\Local\F-Secure\BT Cloud\Application), so unfortunately it is not possible to put BT Cloud on another drive.