With Ventura 13 you cannot eject the EFI partition without having to cancel another disk Here a Simple app to Eject EFI on Ventura 13  Note: you can not Unmount "EFI 1" or "EFI 2" Only EFI is available to unmount. Update: Eject EFI Ventura 13-V2 can unmount any EFI partition   For quick access I put in my Applications then drag to my DOCK   Eject EFI Ventura 13.zip   Update Eject EFI Ventura 13-V2 can unmount any EFI partition Eject EFI Ventura