5.2. Accesibilidad

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. Installer front-end

The Debian installer supports several front-ends for asking questions, with varying convenience for accessibility: notably, text uses plain text while newt uses text-based dialog boxes. The choice can be made at the boot prompt, see the documentation for DEBIAN_FRONTEND in Sección 5.3.2, “Parámetros del instalador de Debian”.

5.2.2. Dispositivos de Tarjeta

Algunos dispositivos de accesibilidad se presentan como tarjetas que se insertan dentro de la máquina y que leen el texto directamente de la memoria de vídeo. Para hacer uso de ellas se debe deshabilitar el uso de «framebuffer» con el parámetro de arranque fb=false. Sin embargo, esto reduce el número de idiomas disponibles.

5.2.3. Temas de Alto contraste

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

5.2.4. Zoom

For users with low vision, the graphical installer has a very basic zoom support: the Control++ and Control+- shortcuts increase and decrease the font size.

5.2.5. Expert install, rescue mode, automated install

Expert, Rescue, and Automated installation choices are also available with accessibility support. To access them, one has to first enter the Advanced options submenu from the boot menu by typing a. When using a BIOS system (the boot menu will have beeped only once), this has to be followed by Enter. Then, to enable speech synthesis, s can optionally be pressed (followed again by Enter when using a BIOS system). From there, various shortcuts can be used: x for expert installation, r for rescue mode, or a for automated installation. When using a BIOS system, they must be followed by Enter.

The automated install choice allows to install Debian completely automatically by using preseeding, whose source can be entered after accessibility features get started. Preseeding itself is documented in Apéndice B, Instalar automáticamente utilizando preconfiguración.

5.2.6. Accesibilidad del sistema instalado

La documentación sobre accesibilidad del sistema instalado está disponible en la página wiki de accesibilidad de Debian.