Debian 10 適切なアップデートの問題

私はDebianバスターを新しくインストールしましたが、APTの使用に問題があります。

走ってsudo apt updateこれを得た

Ign:1 cdrom://[Debian GNU/Linux 10.1.0 _Buster_ - Official amd64 NETINST 20190908-01:07] buster InRelease
Err:2 cdrom://[Debian GNU/Linux 10.1.0 _Buster_ - Official amd64 NETINST 20190908-01:07] buster Release
 Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Hit:3 http://deb.debian.org/debian buster InRelease              
Ign:4 http://deb.debian.org/debian buster/updates InRelease      
Hit:5 http://deb.debian.org/debian buster-updates InRelease
Err:6 http://deb.debian.org/debian buster/updates Release
  404  Not Found [IP: 151.101.132.204 80]
Reading package lists... Done
E: The repository 'cdrom://[Debian GNU/Linux 10.1.0 _Buster_ - Official amd64 NETINST 20190908-01:07] buster 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.
E: The repository 'http://deb.debian.org/debian buster/updates 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 (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:3 and /etc/apt/sources.list:4
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:3 and /etc/apt/sources.list:4
W: Target Translations (main/i18n/Translation-en_US) is configured multiple times in /etc/apt/sources.list:3 and /etc/apt/sources.list:4
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:3 and /etc/apt/sources.list:4
W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:3 and /etc/apt/sources.list:4
W: Target DEP-11 (main/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list:3 and /etc/apt/sources.list:4
W: Target DEP-11-icons-small (main/dep11/icons-48x48.tar) is configured multiple times in /etc/apt/sources.list:3 and /etc/apt/sources.list:4
W: Target DEP-11-icons (main/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:3 and /etc/apt/sources.list:4

私のソースリストの内容は次のとおりです。

    # 

deb cdrom:[Debian GNU/Linux 10.1.0 _Buster_ - Official amd64 NETINST 20190908-01:07]/ buster main
deb cdrom:[Debian GNU/Linux 10.1.0 _Buster_ - Official amd64 NETINST 20190908-01:07]/ buster main

deb http://deb.debian.org/debian/ buster main
deb-src http://deb.debian.org/debian/ buster main

deb http://deb.debian.org/debian/ buster/updates main
deb-src http://deb.debian.org/debian/ buster/updates main

# buster-updates, previously known as 'volatile'
deb http://deb.debian.org/debian/ buster-updates main
deb-src http://deb.debian.org/debian/ buster-updates main

# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.

ここで何が間違っているのか本当に理解できません。これが私のファイルに新しくインストールされたときに提供されるデフォルトのソースであれば、私は何もしていません。