I tried to install boot-repair, but the installation aborted and told me to install grub-efi and os-prober. When I tried to install those two, I got this error: E: Conflicting values set for option Signed-By regarding source https://ppa.launchpadcontent.net/yan...repair/ubuntu/ noble: /etc/apt/keyrings/boot-repair.gpg != -----BEGIN PGP PUBLIC KEY BLOCK----- $ sudo apt-get install -y grub-efi os-prober E: Conflicting values set for option Signed-By regarding source https://ppa.launchpadcontent.net/yan...repair/ubuntu/ noble: /etc/apt/keyrings/boot-repair.gpg != -----BEGIN PGP PUBLIC KEY BLOCK----- mQINBGYzoxcBEACurKKBm4hHDCA ... followed by the rest of the key block -----END PGP PUBLIC KEY BLOCK----- E: The list of sources could not be read. sudo apt update gives the same error What can I do?
Found the solution myself: sudo rm /etc/apt/sources.list.d/boot-repair.list sudo rm /etc/apt/sources.list.d/yannubuntu-ubuntu-boot-repair-noble.sources sudo rm /etc/apt/sources.list.d/danielrichter2007-ubuntu-grub-customizer-noble.sources.save Then run Software & Updates Remember your server name Change server Close Reload
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