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I think I know but I am a bit confused.

Can someone please explain the difference between Kernel and rootfs in embedded system environment?

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2 Answers 2

rootfs is just an ununmountable ramfs/tmpfs. The kernel is a chunk of code that lives on a real filesystem.

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rootfs is a not-unmountable ramfs. (Not tmpfs.) The kernel is a chunk of code that can initially live whereever you want, your bootloader may load it over network, and then into memory. A filesystem may not actually be involved.

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