Does uImage contains a rfs?
 

Hi,

When I build a kernel, a kernel image (uImage) is generated. Does this uImage contain a basic root file system? or it's just the kernel and I need to build a root file system for the kernel to mount on power cycle?

Regards,
Dave Xu

Hard to tell actuall as a web search also did not provide a clear anwser. But I say its only the kernel: http://stackoverflow.com/questions/1...and-uimage-bin

Tell us how you created the image.

When you just build a linux kernel from source, it just definitely contains only the kernel uImage/zImage. You need to exclusively create and build the required file system with utilities, apps and boot the device.
However it may so happen that you can create kernel image, file system image and pack them together to be one single image.