This is a short little post on how to activate iDRAC7 enterprise on Dell PowerEdge R#20/T#20 servers
To start you need to download a 10-year-old version of OMSA (OpenManage Server Administrator) It is hard to find as it’s no longer supported but here is a working archive.org link, I have also mirrored it. You can flash this ISO to a USB drive using something like Rufus or Ventoy. Now once you boot into the live environment open the gnome-terminal and run the following commands. I also have provided a video at the bottom of the post.
sudo su smbios-sys-info --service-tag --set=9QYZF42 reboot