Embedded Linux boot optimization: from seconds to milliseconds

Fast boot is not a single kernel option. It is the result of measuring and shortening every stage between power-on and useful work. This is an English DEV.to draft based on a Silicon LogiX technical article. The canonical source is linked at the end. Why it matters For HMIs, gateways and control devices, boot time affects perceived quality and sometimes functional requirements. A desktop-like boot path is rarely acceptable in a dedicated embedded product. Architecture notes The chain includes RO