Excuse my ignorance, but i’m a new RTOS user.
What’s the dufference between OS image and OS on target?
and if they’re the same thing how do i load an image on target if it has no QNX OS first?
The OS image is the file that is loaded on your target hardware. It has the startup code, the kernel, and the image filesystem (/proc/boot) that contains the basic stuff to get your system moving (sometimes it has everything a system needs to run).
As for getting it onto your target system you can network boot the target, boot from a CD drive, floppy drive, etc, etc, etc. Exactly how you boot your target hardware is target dependant.