Dear Community: I have this server with this OS and everything still works fine. But, I no longer need the server, and the OS is now not supported. I cannot find the original OS disks. I would ideally like to overwrite the OS to effectively and permanently delete any personal data so I can give the server away. Therefore I would also not like to purchase an updated software for the server.

Maybe there is a better way or maybe I can somehow recover the OS and overwrite everything? Or is there a simpler way to decommission and ensure no personal data is left? I would sincerely appreciate any recommendations. Thank you.