boot

Sometimes when a machine is booting up with Linux Operating System, some errors appears on the console while booting up, but they just pass too fast for one to read them. Therefore you need look at those messages somewhere else.

If you are using Debian, you can enable boot logging so all the messages send to console while booting will also be sent to a file that you can later examine.

Making your system a triple boot box, this can help you achieve this.