I have a usermanager install with an 80GB hd. ROS 5.9
The router was upgraded long ago from ros3, then ros4, now on ros5.9
The hard drive is full. I've deleted logs and sessions etc to no improvement. Verry little space was freed up by that process. What little space that was recovered filled right back up in a couple of weeks.
So I was going to erase the drive and restore the configuration from a backup.
What is the best way to delete content from the drive and retain the key?