5.2. Accessibility

Some users may need specific support because of e.g. some visual impairment. Most accessibility features have to be enabled manually. Some boot parameters can be appended to enable accessibility features. Note that on most architectures the boot loader interprets your keyboard as a QWERTY keyboard.

5.2.1. Board Devices

Some accessibility devices are actual boards that are plugged inside the machine and that read text directly from the video memory. To get them to work framebuffer support must be disabled by using the fb=false boot parameter. This will however reduce the number of available languages.

5.2.2. High-Contrast Theme

For users with low vision, the installer can use a high-contrast theme that makes it more readable. To enable it, append the theme=dark boot parameter.