As far as I know, while setting up a new Linux system, distributons prefer to  install packages using their package manager. I mean when an installer is started, you are asked some configuration question like language, keyboard etc. After that, disk is prepared and selected packages are installed by calling package manager commands such as yum install or dpkg -i.Using these commands make sense because package managing has its own routines such as pre install or post install configurations etc.My question is, do all the distributions use this same approach?I'm asking because I remember that I've heard installers can copy previously prepared binary data to disk instead of using package manager commands so that installation time can be shrinked.
Linux system installer approaches
system installation;distributions;software distribution