So Bentek, a few thoughts on Linux maintenance and version naming...
"Linux" is both the proper name for the system kernel AND is a shorthand for an operating system distribution based upon the Linux kernel.
"Distributions" are the flavors of linux and supporting applications, configuration preferences, and default capabilities that are built by companies/parties who provide an installation of the kernel and apps. You may want to visit distrowatch.com to better understand the universe of distributions.
Components of distributions are either maintained through "package management" or compiling from source. Compiling from source to update an application or your kernel is probably a self-evident concept, but it's also a pain in many cases because of dependencies on other software. Package management, on the other hand, is generally a smart process that is very similar to how Microsoft provides automated system updates.
Essentially, linux distributions with automated package management will periodically poll a package source server run by the distribution vendor (or another 3rd party). If a new package is found, the package manager process will probably download the package(s) and attempt to apply them to existing, installed applications/kernel.
Soooo...........................
RedHat 9 is a distribution published years ago by Red Hat and RH9 has long gone out of support. This means that packages are not being updated for applications nor for the kernel.
Therefore, when someone tells you that the distribution you're proposing to install is not supported by the vendor and they are concerned about the kernel/application version, hopefully you'll understand why.
Obviously RedHat (or Suse, or Ubuntu, or ....) provide newer versions of their distributions - for free or for fee. Unless you have a committed requirement for using RH9, I would recommend that you identify a suitable, (much) newer distribution that is under package/support and proceed with that software instead.
OK?
D.E.R. Management - IT Project Management Consulting