# Installer Boot Help Screens

F1 Welcome to ${DISTRIBUTION_NAME}!

###

This is an installation system for ${DISTRIBUTION_NAME} ${DISTRIBUTION_VERSION}. It was built on ${BUILD_DATE}.

This is a live system for ${DISTRIBUTION_NAME} ${DISTRIBUTION_VERSION}. It was built on ${BUILD_DATE}.

HELP INDEX

KEY TOPIC
- F1 This page, the help index.
- F2 Prerequisites for installing ${DISTRIBUTION_NAME}.
- F2 Prerequisites for running ${DISTRIBUTION_NAME}.
- F3 Boot methods for special ways of using this system.
- F4 Additional boot methods; rescuing a broken system.
- F5 Special boot parameters, overview.
- F6 Special boot parameters for special machines.
- F7 Special boot parameters for selected disk controllers.
- F8 Special boot parameters for the install system.
- F8 Special boot parameters for the bootstrap system.
- F9 How to get help.
- F10 Copyrights and warranties.

    For F1-F9 type control and F then the digit 1-9
    For F10 type control and F then the digit 0

Press F2 through F10 for details, or ENTER to ${BOOTPROMPT}

Press F2 through F10 for details, or Escape to exit help.

F2 PREREQUISITES FOR INSTALLING UBUNTU

###

You must have at least 44 megabytes of RAM to use this Ubuntu installer.

You should have space on your hard disk to create a new disk partition of at least 5 gigabytes to install a standard Ubuntu desktop system or at least 500 megabytes for a minimal server installation. You'll need more disk space to install additional packages, depending on what you wish to do with your new Ubuntu system.

See the Installation Guide or the FAQ for more information; both documents are available at the Ubuntu web site,

You must have at least 384 megabytes of RAM to use this Ubuntu live system.

The live system does not require any space on your hard disk. However, existing Linux swap partitions on the disk will be used if available.

See the FAQ for more information; this document is available at the Ubuntu web site,

Thank you for choosing Ubuntu!

Press F1 control and F then 1 for the help index, or ENTER to ${BOOTPROMPT}

Press F1 for the help index, or Escape to exit help.

F3 BOOT METHODS

### Available boot methods:

install
Install Ubuntu

  Start the installation -- this is the default option.

expert

  Start the installation in expert mode, for maximum control.

cli
cli-expert

  Minimal command-line system install.

live
Try Ubuntu without any change to your computer

  Start the live system. If you wish, you can install it later using the "Install" icon on the desktop.

live-install
Install Ubuntu

  Start the installation.

memtest
Test memory

  Perform a memory test.

To use one of these boot methods, type it at the prompt, optionally followed by any boot parameters. For example:

    boot: install acpi=off

    boot: live acpi=off

If unsure, you should use the default boot method, with no special parameters, by simply pressing enter at the boot prompt.

("Ubuntu" may be replaced with other related operating system names. This help text is generic.)

To use one of these boot methods, select it from the menu with the cursor keys. Press F4 to select alternative start-up and installation modes. Press F6 to edit boot parameters. Press F6 again to select from a menu of commonly-used boot parameters.

Except in expert mode, non-critical kernel boot messages are suppressed.

Press F1 control and F then 1 for the help index, or ENTER to ${BOOTPROMPT}

Press F1 for the help index, or Escape to exit help.

F4 RESCUING A BROKEN SYSTEM

### Use one of these boot methods to rescue an existing install

rescue
Rescue a broken system

  Boot into rescue mode.

To use one of these boot methods, type it at the prompt, optionally followed by any boot parameters. For example:

    boot: rescue acpi=off

To use one of these boot methods, select it from the menu with the cursor keys. Press F4 to select alternative start-up and installation modes. Press F6 to edit boot parameters. Press F6 again to select from a menu of commonly-used boot parameters.

Press F1 control and F then 1 for the help index, or ENTER to ${BOOTPROMPT}

Press F1 for the help index, or Escape to exit help.

F4 RESCUING A BROKEN SYSTEM

###

There is no dedicated rescue mode on this disc. However, since the disc provides a complete user environment, it is possible to use the command-line and/or graphical tools provided to rescue a broken system, and to use a web browser to search for help. Extensive advice is available online for most kinds of problems that might cause your normal system to fail to boot correctly.

Press F1 control and F then 1 for the help index, or ENTER to ${BOOTPROMPT}

Press F1 for the help index, or Escape to exit help.

F5 SPECIAL BOOT PARAMETERS - OVERVIEW

###

On a few systems, you may need to specify a parameter at the `boot:` prompt in order to boot the system.

On a few systems, you may need to specify a parameter by pressing F6 in order to boot the system.

For example, Linux may not be able to autodetect your hardware, and you may need to explicitly specify its location or type for it to be recognized.

For more information about what boot parameters you can use, press:

- F6 boot parameters for special machines
- F7 boot parameters for various disk controllers
- F8 boot parameters understood by the install system
- F8 boot parameters understood by the bootstrap system

Many kernel modules are loaded dynamically by the installer, and parameters for those modules cannot be given on the command line. To be prompted for parameters when modules are loaded, boot in expert mode (see F3).

Many kernel modules are loaded dynamically by the bootstrap system, and parameters for those modules cannot be given on the command line.

Press F1 control and F then 1 for the help index, or ENTER to ${BOOTPROMPT}

Press F1 for the help index, or Escape to exit help.

F6 SPECIAL BOOT PARAMETERS - VARIOUS HARDWARE

###

You can use the following boot parameters at the `boot:` prompt, in combination with the boot method (see F3).

You can use the following boot parameters by pressing F6, in combination with the boot method (see F3).

If you use hex numbers you have to use the 0x prefix (e.g., 0x300).

HARDWARE PARAMETER TO SPECIFY
- IBM PS/1 or ValuePoint (IDE disk) `hd=cylinders,heads,sectors`
- Some IBM ThinkPads `floppy.floppy=thinkpad`
- Protect I/O port regions `reserve=iobase,extent``,...`
- Laptops with screen display problems `vga=771`
- Use first serial port at 9600 baud `console=ttyS0,9600n8`
- Force use of generic IDE driver `all_generic_ide=1`

Possible (temporary) workarounds for lockups or other hardware failures:

- disable buggy APIC interrupt routing `noapic nolapic`
- (partly) disable ACPI `acpi=noirq` or `acpi=off`
- disable USB `nousb`
- poll for interrupts `irqpoll`

For example:

    boot: install vga=771 noapic nolapic

    boot: live vga=771 noapic nolapic

Press F1 control and F then 1 for the help index, or ENTER to ${BOOTPROMPT}

Press F1 for the help index, or Escape to exit help.

F7 SPECIAL BOOT PARAMETERS - VARIOUS DISK DRIVES

###

You can use the following boot parameters at the `boot:` prompt, in combination with the boot method (see F3).

You can use the following boot parameters by pressing F6, in combination with the boot method (see F3).

HARDWARE PARAMETER TO SPECIFY
- Adaptec 151x, 152x `aha152x.aha152x=iobase``,irq``,scsi-id``,reconnect`
- Adaptec 1542 `aha1542.aha1542=iobase``,buson,busoff``,dmaspeed`
- Adaptec 274x, 284x `aic7xxx.aic7xxx=no_reset` (enabled if non-zero)
- BusLogic SCSI Hosts `BusLogic.BusLogic=iobase`
- Certain DELL machines `aic7xxx.aic7xxx=no_probe`

This list is incomplete, see the kernel's kernel-parameters.txt file for more.

For example:

    boot: install aic7xxx.aic7xxx=no_probe

    boot: live aic7xxx.aic7xxx=no_probe

Press F1 control and F then 1 for the help index, or ENTER to ${BOOTPROMPT}

Press F1 for the help index, or Escape to exit help.

F8 SPECIAL BOOT PARAMETERS - INSTALLATION SYSTEM

You can use the following boot parameters at the `boot:` prompt, in combination with the boot method (see F3).

You can use the following boot parameters by pressing F6, in combination with the boot method (see F3).

These parameters control how the installer works.

These parameters control how the bootstrap system works.

RESULT PARAMETER
- Disable framebuffer `vga=normal fb=false`
- Don't start PCMCIA `hw-detect/start_pcmcia=false`
- Force static network config `netcfg/disable_dhcp=true`
- Set keyboard map `bootkbd=es`
- Select the Kubuntu desktop `tasks=kubuntu-desktop`
- Disable ACPI for PCI maps (handy for some HP servers and Via-based machines) `pci=noacpi`
- Use high contrast theme `theme=dark`
- Use Braille tty `brltty=driver,device,texttable`

For example:

    boot: install vga=normal fb=false

    boot: live pci=noacpi

Press F1 control and F then 1 for the help index, or ENTER to ${BOOTPROMPT}

Press F1 for the help index, or Escape to exit help.

F9 GETTING HELP

###

If you can't install Ubuntu, don't despair!

If you can't start Ubuntu, don't despair!

The Ubuntu team is ready to help you!

We are especially interested in hearing about installation problems, because in general they don't happen to only one person.

We are especially interested in hearing about startup problems, because in general they don't happen to only one person.

We've either already heard about your particular problem and can dispense a quick fix, or we would like to hear about it and work through it with you, and the next user who comes up with the same problem will profit from your experience!

See the Installation Guide or the FAQ for more information; both documents are available at the Ubuntu web site,

See the FAQ for more information; this document is available at the Ubuntu web site,

Press F1 control and F then 1 for the help index, or ENTER to ${BOOTPROMPT}

Press F1 for the help index, or Escape to exit help.

F10 COPYRIGHTS AND WARRANTIES

###

Ubuntu is Copyright (C) 2004-2010 Canonical Ltd., and incorporates the work of many other original authors and contributors.

The Ubuntu system is freely redistributable.

After installation, the exact distribution terms for each package are described in the corresponding file /usr/share/doc/packagename/copyright.

After startup, the exact distribution terms for each package are described in the corresponding file /usr/share/doc/packagename/copyright.

Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law.

This installation system is based on the Debian installer. See for more details and information on the Debian project.

This system is based on Debian. See for more details and information on the Debian project.

Press F1 control and F then 1 for the help index, or ENTER to ${BOOTPROMPT}

Press F1 for the help index, or Escape to exit help.