New MacBook Air running Sequoia, the desktop folders also appear on HD
The desktop folders are duplicated on HD. If I delete document from desktop folder it also gets deleted on HD.
MacBook Air 15″, macOS 15.3
Not sure what you are getting at here.
Desktop appears under your user name on your Macintosh HD.
Those files also appear on your desktop screen (on your monitor).
If you delete a file from your desktop screen it will be deleted from your Desktop folder under your user name.
Similarly, if you delete a file from your Desktop folder under your user name, it will be deleted desktop screen.