For more also check the output of the dmesg command.
Upon boot, the dmesg output is from the kernel booting, showing the devices it has found and if it has been able to configure them at all (aside from userland configuration). This log is also available in the file /var/log/dmesg.
The manpage for dmesg is quite simple:
dmesg - print or control the kernel ring buffer
dmesg [ -c ] [ -n level ] [ -s bufsize ]
dmesg is used to examine or control the kernel ring