Speed up Ubuntu boot

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Well, at first you gotta install bum, the boot-up manager. sudo apt-get install bum
This program gives a list of programs which run at startup.
Once the installation finished, do sudo bum and the program will start.

There, you'll see many names, and on the left some ticks.

Let's see what to remove: If you don't use printers, remove cups, the common-unix-printing-system. Same thing if you don't use scanners, remove saned.
Remove the bluetooth too if you don't use it.
For the other process with names, we can say, hard to read, find them out on Google: you'll find informations.

Once you finish, click on "Apply" and then close it.

Another way to speed a few up the boot, is removing some ttys. TTYs are consoles which you can see pressing Ctrl + Alt + F1-6. To come back to the desktop, press Ctrl + Alt + F7

Well, by default there are 6 consoles. Aren't them too many for us that doesn't use them? Let's make them 2, really better :)

Open the terminal and type

sudo gedit /etc/init/tty3.conf

You'll find a file like this:

    # tty3 - getty
    #
    # This service maintains a getty on tty3 from the point the system is
    # started until it is shut down again.

    start on runlevel [23]
    stop on runlevel [!23]

    respawn
    exec /sbin/getty -8 38400 tty3

 Just add # before start and stop, to make this:

   # tty3 - getty
    #
    # This service maintains a getty on tty3 from the point the system is
    # started until it is shut down again.

    #start on runlevel [23]
    #stop on runlevel [!23]

    respawn
    exec /sbin/getty -8 38400 tty3

Save, and exit.
Do the same things for tty4.conf, tty5.conf and tty6.conf files.

sudo gedit /etc/init/tty4.conf

sudo gedit /etc/init/tty5.conf

sudo gedit /etc/init/tty6.conf

These are the most useful tricks, and you'll see improvement.
Otherwise, wait half April for the release of Ubuntu 10.04 Lucid Lynx, which will have a very improved boot. I'm testing it right now, and from 35 seconds of Karmic, i went to 24 :) However, i don't suggest to use an Alpha, cause it's really unstable.

This guide has been tested on Ubuntu 9.10.

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