如何解決「儲存庫‘cdrom://Ubuntu 20.04.2.0 LTS _Focal Fossa_ - Release amd64 (20210209.1) focus Release’沒有發布檔案」?

如何解決「儲存庫‘cdrom://Ubuntu 20.04.2.0 LTS _Focal Fossa_ - Release amd64 (20210209.1) focus Release’沒有發布檔案」?
$ sudo apt update
E: The repository 'cdrom://Ubuntu 20.04.2.0 LTS _Focal Fossa_ - Release amd64 (20210209.1) focal 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.

答案1

開啟軟體和更新,在 Ubuntu 軟體標籤中,取消選取可從 CD-ROM/DVD 安裝下的 CDROM with Ubuntu 20.04 'Focal Fossa'

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