To set up your Oculus Rift, you’ll first need to download the Oculus app on your PC computer and then create an Oculus account. Before you install the Oculus app, check to make sure your system drive has at least 4GB of free disk space and is formatted to use the NTFS file system.

To download and install the Oculus app on your computer:

1. Go to https://www.oculus.com/setup to download the Oculus app
2. Open the Oculus app and click Install Now
3. Follow the on-screen instructions to create an Oculus account and set up your devices

While you're installing the Ouclus app, you can choose where you want to download and install your apps and games. However, if you want to download the Oculus app on a different system drive, you'll need to do this manually.

To install the Oculus app on a different system drive:

1. Press the Windows key + R on your keyboard to open the Run command
2. Enter OculusSetup /drive: [new system drive] (example: OculusSetup /drive:D)
Note: If OculusSetup /drive: does not work, use OculusSetup /drive=
3. Click OK

The Oculus app will then open and install the app on the new drive you’ve chosen.