It's hardware, a few-year-old AMD system, 8 GB of RAM and a 400 GB hard drive. I'm installing on that system to test 9.0 (particularly the part about how it has to have a fresh install and restore from backup, rather than an upgrade in place). I have a "workstation" backup in an NFS share on my NAS server.
When booting a fresh, unconfigured installation of SME 9.0, the first question it asks is "do you wish to restore from backup?" When answered in the affirmative, the next two prompts are as I posted--insert the removable media, and then no removable media found. Does the first-boot configuration not support restoring from a network backup, but only from attached storage? That seems suboptimal.
Is it then the case that I should continue through the configuration (not restoring from backup), and then restore through the server-manager (presumably overwriting the configuration, root password, etc. I just set up)?