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This problem can happen in the case of Hyper-V virtualization (Happened to me today). In this case the answer is to disable OS-probbing in grub by opening the configuration file : sudo nano /etc/default/grub And adding the line : GRUB_DISABLE_OS_PROBER=true


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"Clean install" is basically new installation. It's just informal way of saying "New installation". There's no user files, no user-specific settings. There are plenty of tutorials on how to do it on the web. Particularly, this one. To summarize, you need to download Ubuntu's image (a file with *.iso extension), and "burn" (or extract it ) to a USB or ...


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I have removed my /var/lib/dpkg/available via sudo rm /var/lib/dpkg/available and an installation is possible. Simply run the commands below: sudo apt-get install dselect sudo dselect update If the installation isn't possible, download the dselect package from here and install the package via the command below. I have used the 64-bit version for ...


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Usually this error is harmless. If you still want to recreate /var/lib/dpkg/available with the contents, open a terminal and type: sudo touch /var/lib/dpkg/available sudo sh -c 'for i in /var/lib/apt/lists/*_Packages; do dpkg --merge-avail "$i"; done' From man dpkg: --merge-avail With action --merge-avail, old information is combined with ...



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