FATAL: boot device not found, check your firmware settings!root device: /dev/cd0
I think Is the cd Rom the problem
Try to make pen USB boot Will work.
The T5220 cannot boot from USB AFAIK.
Anyway, Debian works as expected (from CD-ROM).
Sun Fire V215 boots/installs NetBSD8.1 from the same CD-ROM OK, but complaining about some issues during kernel startup (I can provide logs/remote if needed/useful)