NOTE: This question & solution ONLY relates to Compute Modules 3 or 3+ with on-board eMMC storage. The "Lite" versions of these has NO eMMC Storage
I'm working on a project involving prototyping and bought a "Raspberry Pi Compute Module 3 Dev Kit" which shipped with a Compute Module 3 with 4GB of eMMC on-board storage and more recently the newer "Raspberry Pi Compute Module 3+ Dev Kit" with a Compute Module 3+ with 32GB of on-board eMMC storage.
Both kits ship with the "Compute Module IO Board v3.0" used to interface with these Compute Modules.
How do I install Raspbian on the Compute Module's eMMC storage?!?!?!
I'll share the (2) ways I found to populate the Compute Module 3/3+ eMMC storage with the Raspbian OS to hopefully make your lives considerably easier
