However, if you are an existing OneDrive user, you won’t want to leave your essential files behind. Thankfully, there is a straightforward way to transfer OneDrive documents to Proton Drive.

To change default hard drive from C: to D: in Windows 11/10, change the default save location for apps and files, move user folders to D:, etc.

The straightforward way to move everything from Google Drive to Proton Drive involves downloading the files from Google Takeout, unzipping them, and uploading uncompressed files to Proton Drive.