On startup, where does the output to dmesg get logged?

Doesn't say on the man page:

1 Answer

Usually kernel's operation related messages are stored in a fixed sized memory called the Kernel Ring Buffer. It's location is /proc/kmsg. dmesg usually prints the entries of the Kernel Ring Buffer in a human readable format. As it is a buffer (a temporary storage) mounted under /proc, you can imagine that it will not survive a reboot i.e. it will just show all the Kernel logs after being powered On. If you want to check all the previous Kernel logs you need to check /var/log/kern.log, as it is being stored on the disk it will survive the reboots.

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