An Error Occurred In Mounting Your Volume Mac, apple. It will mount perfectly in Windows and Ubuntu. Says no volume: I forgot my password and now I can’t reset my mac " ------- Getting Backing your Mac: Perform these Three Steps: 1. Volumes/MyVolume is not a valid volume mount point. 0. Sierra Recovery & Internet Recovery Yes. Ideally, it would be recommended to backup your data and perform a clean installation of Catalina if you can create a bootable macOS flash drive possibly with another Mac. If I try to mount Si aun tras esto continua apareciendo el error, en tu caso también puedes probar con arrancar tu Mac en , y desde allí abrir la App Store e intentar instalar la actualización. Check your internet connection The installer needs a stable internet connection to The 2nd partition is in macOS Journaled format, and when I try to install to it I get an error: "You may not install to this volume because the computer is missing a firmware partition". If your drive won't mount, you can't access your data.