Typically when a FreeBSD system boots, it displays its progress as a series of messages at the console. A boot splash screen creates an alternate boot screen that hides all of the boot probe and service startup messages. A few boot loader messages, including the boot options menu and a timed wait countdown prompt, are displayed at boot time, even when the splash screen is enabled. The display of the splash screen can be turned off by hitting any key on the keyboard during the boot process.

There are two basic environments available in FreeBSD. The first is the default legacy virtual console command line environment. After the system finishes booting, a console login prompt is presented. The second environment is a configured graphical environment. Refer to Chapter 5, The X Window System for more information on how to install and configure a graphical display manager and a graphical login manager.

Once the system has booted, the splash screen defaults to being a screen saver. After a time period of non-use, the splash screen will display and will cycle through steps of changing intensity of the image, from bright to very dark and over again. The configuration of the splash screen saver can be overridden by adding a saver= line to /etc/rc.conf. Several built-in screen savers are available and described in splash(4). The saver= option only applies to virtual consoles and has no effect on graphical display managers.

By installing the sysutils/bsd-splash-changer package or port, a random splash image from a collection will display at boot. The splash screen function supports 256-colors in the bitmap (.bmp), ZSoft PCX (.pcx), or TheDraw (.bin) formats. The .bmp, .pcx, or .bin image has to be placed on the root partition, for example in /boot. The splash image files must have a resolution of 320 by 200 pixels or less in order to work on standard VGA adapters. For the default boot display resolution of 256-colors and 320 by 200 pixels or less, add the following lines to /boot/loader.conf. Replace splash.bmp with the name of the bitmap file to use:

splash_bmp_load="YES"
bitmap_load="YES"
bitmap_name="/boot/splash.bmp"

To use a PCX file instead of a bitmap file:

splash_pcx_load="YES"
bitmap_load="YES"
bitmap_name="/boot/splash.pcx"

To instead use ASCII art in the https://en.wikipedia.org/wiki/TheDraw format:

splash_txt="YES"
bitmap_load="YES"
bitmap_name="/boot/splash.bin"

Other interesting loader.conf options include:

For more information, refer to splash(4), loader.conf(5), and vga(4).