Instalação do VirtualBox de maneira correta / Ubuntu e Linux Mint

Linux Iniciantes
1

$ sudo apt update && sudo apt-get --install-recommends install virtualbox virtualbox-guest-additions-iso virtualbox-ext-pack -y

2 curtidas
2

aqui no MINT 20 nd!
Atingido:8 Index of /ubuntu focal-security InRelease
Ign:10 Index of http://download.virtualbox.org/virtualbox/debian ulyana InRelease
Err:11 Index of http://download.virtualbox.org/virtualbox/debian ulyana Release
404 Not Found [IP: 23.46.200.39 80]
Lendo listas de pacotes… Pronto
E: The repository ‘Index of http://download.virtualbox.org/virtualbox/debian ulyana Release’ does not have a Release file.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: Target Packages (contrib/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/virtualbox.list:1 and /etc/apt/sources.list.d/virtualbox.list:2
W: Target Packages (contrib/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list.d/virtualbox.list:1 and /etc/apt/sources.list.d/virtualbox.list:2
W: Target Packages (contrib/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/virtualbox.list:1 and /etc/apt/sources.list.d/virtualbox.list:2
W: Target Translations (contrib/i18n/Translation-pt_BR) is configured multiple times in /etc/apt/sources.list.d/virtualbox.list:1 and /etc/apt/sources.list.d/virtualbox.list:2
W: Target Translations (contrib/i18n/Translation-pt) is configured multiple times in /etc/apt/sources.list.d/virtualbox.list:1 and /etc/apt/sources.list.d/virtualbox.list:2
W: Target Translations (contrib/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/virtualbox.list:1 and /etc/apt/sources.list.d/virtualbox.list:2
W: Target DEP-11 (contrib/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list.d/virtualbox.list:1 and /etc/apt/sources.list.d/virtualbox.list:2
W: Target DEP-11 (contrib/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list.d/virtualbox.list:1 and /etc/apt/sources.list.d/virtualbox.list:2
mas valeu