Example: I have a centos or debian X.Y installed on physical disks, with a 2.6 kernel. Now I put a "live distro" ISO (example archlinux) on one DVD and
- boot the system from the DVD, so now the running os is a 4.x kernel
- mount the root f.s. of the physical disk and chroot to it
So now the root file system is not the real one of the live os.
Running "yum install ..." seems to work!
Is there any official documentation about yum requirements?
Does yum work using as input only the file-system, so this kind of operations are absolutely safe?