You will need to pin the debian package "base-files" to -1 so it does not install because it is the package that contains the file you are referring to.
On 21/10/2020, Harshad Joshi <firewal...@gmail.com> wrote: > It is observed that modified content of /etc/os-release for live iso gets > changed back to debian after apt-get upgrade from buster repository. > > Due to this, grub menu gets modified and instead of customized os name it > gets changed to debian. > > How can we make sure that customized os title remains same?? Please advise. > > --sent from OnePlus device-- >