BootOptions
Options for the boot command line.
This list is not comprehensive but it contains some of the common options. When presented with the text on the screen "boot: " then the options below can be given. They must have the kernel name before the option. e.g. boot: linux noacpi Options can be used together.
Option: noacpi
Impact: Does not start the Advanced Configuration and Power Interface (ACPI). Can prevent the impact of bad ACPI implementations, which in turn cause random reboots or system lockups.
Option: noapic nolapic
Impact: A broken "Advanced Programmable Interrupt Controller" may work with this option. They usually randomly freeze machines or produce repetitive messages about IRQ issues.
Option: hw-detect/start_pcmcia=false
Impact: Don't Start PCMCIA
Option: debian-installer/framebuffer=false
Impact: Disable framebuffer.
Option: hw-detect/start_pcmcia=false
Impact: Don't start PCMCIA. Personal Computer Memory Card International Association, one of the stranger names for a piece of hardware. 
Your hardware is an association.
Option: netcfg/disable_dhcp=true
Impact: Force static network config.
Option: bootkbd=uk
Impact: Set keyboard map. Use a two letter ISO country code to get the right letters on the right keys. This option can help with password problems.