Know from which device the Linux kernel booted

Question

我如何知道Linux内核从哪个设备引导？

Answer 1

mount

除非该命令为/ boot指定设备，否则您可以假定它在/上。

Answer 2

In fact, something like that http://lkml.org/lkml/2003/12/19/139 can satisfy me. But a simplier way will be appreciate.

Answer 3

cat /proc/cmdline