[...] > had per ongeluk de boot dir weggersync'd En de /var/cache/apt/archives is natuurlijk leeg. Ik herken het probleem. echo 'Binary::apt::APT::Keep-Downloaded-Packages "1";' | sudo tee /etc/apt/apt.conf.d/10apt-keep-downloads https://unix.stackexchange.com/questions/499035/disable-auto-clean-in-apt