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-live-initramfs(7)
-=================
-:man source: 1.157.3
-:man manual: Debian Live
-
-Name
-----
-live-initramfs - Debian Live initramfs hook
-
-Synopsis
---------
-BOOT=live
-
-as kernel parameter at boot prompt.
-
-Description
------------
-
-live-initramfs is a hook for the initramfs-tools, used to generate a initramfs
-capable to boot live systems, such as those created by *live-helper*(7).
-This includes the Debian Live isos, netboot tarballs, and usb stick images.
-
-At boot time it will look for a (read-only) media containing a "/live"
-directory where a root filesystems (often a compressed filesystem image like
-squashfs) is stored. If found, it will create a writable environment, using
-aufs, for Debian like systems to boot from.
-
-You probably do not want to install this package onto a non-live system,
-although it will do no harm.
-
-live-initramfs is a fork of link:http://packages.ubuntu.com/casper/[casper].
-casper was originally written by Tollef Fog Heen <tfheen@canonical.com>
-and Matt Zimmerman <mdz@canonical.com>.
-
-Boot options
-------------
-
-Here is the complete list of recognized boot parameters by live-initramfs.
-
- access=*ACCESS*::
-
-Set the accessibility level for physically or visually impared users. ACCESS
-must be one of v1, v2, v3, m1, or m2. v1=lesser visual impairment, v2=moderate
-visual impairment, v3=blindness, m1=minor motor difficulties, m2=moderate motor
-difficulties.
-
- console=*TTY,SPEED*::
-
-Set the default console to be used with the "live-getty" option. Example:
-"console=ttyS0,115200"
-
- debug::
-
-Makes initramfs boot process more verbose.
-
- fetch=*URL*::
-
-Another form of netboot by downloading a squashfs image from a given url,
-copying to ram and booting it. Due to current limitations in busyboxs wget
-and DNS resolution, an URL can not contain a hostname but an IP only.
-
-Not working: http://example.com/path/to/your_filesystem.squashfs
-Working: http://1.2.3.4/path/to/your_filesystem.squashfs
-
-Also note that therefore it's currently not possible to fetch an image from a
-namebased virtualhost of an httpd if it is sharing the ip with the main httpd
-instance.
-
- hostname=*HOSTNAME*, username=*USER*, userfullname=*USERFULLNAME*::
-
-Those parameters lets you override values read from the config file.
-
- ignore_uuid
-
-Do not check that any UUID embedded in the initramfs matches the discovered
-medium. live-initramfs may be told to generate a UUID by setting
-LIVE_GENERATE_UUID=1 when building the initramfs.
-
- integrity-check::
-
-If specified, an MD5 sum is calculated on the live media during boot and
-compared to the value found in md5sum.txt found in the root directory of the
-live media.
-
- ip=**[CLIENT_IP]:[SERVER_IP]:[GATEWAY_IP]:[NETMASK]:[HOSTNAME]:[DEVICE]:[AUTOCONF] [,[CLIENT_IP]:[SERVER_IP]:[GATEWAY_IP]:[NETMASK]:[HOSTNAME]:[DEVICE]:[AUTOCONF]]***::
-
-Let you specify the name(s) and the options of the interface(s) that should be
-configured at boot time. Do not specify this if you want to use dhcp (default).
-It will be changed in a future release to mimick official kernel boot param
-specification (e.g. ip=10.0.0.1::10.0.0.254:255.255.255.0::eth0,:::::eth1:dhcp).
-
- ip=[**frommedia**]::
-
-If this variable is set, dhcp and static configuration are just skipped and the
-system will use the (must be) media-preconfigured /etc/network/interfaces
-instead.
-
- {keyb|kbd-chooser/method}=**KEYBOARD**, {klayout|console-setup/layoutcode}=**LAYOUT**, {kvariant|console-setup/variantcode}=**VARIANT**, {kmodel|console-setup/modelcode}=**CODE**, koptions=**OPTIONS**::
-
-Configure the running keyboard as specified, if this one misses live-initramfs
-behaves as if "keyb=us" was specified. It will be interfered from "locale=" if
-locale is only 2 lowecase letters as a special case. You could also specify
-console layout, variant, code, and options (no defaults).
-
- live-getty::
-
-This changes the auto-login on virtual terminals to use the (experimental)
-live-getty code. With this option set the standard kernel argument "console=" is
-parsed and if a serial console is specified then live-getty is used to autologin
-on the serial console.
-
- {live-media|bootfrom}=**DEVICE**::
-
-If you specify one of this two equivalent forms, live-initramfs will first try
-to find this device for the "/live" directory where the read-only root
-filesystem should reside. If it did not find something usable, the normal scan
-for block devices is performed.
-
-Instead of specifing an actual device name, the keyword 'removable' can be used
-to limit the search of acceptable live media to removable type only. Note that
-if you want to further restrict the media to usb mass storage only, you can use
-the 'removable-usb' keyword.
-
- {live-media-encryption|encryption}=**TYPE**::
-
-live-initramfs will mount the encrypted rootfs TYPE, asking the passphrase,
-useful to build paranoid live systems :-). TYPE supported so far are "aes" for
-loop-aes encryption type.
-
- live-media-offset=**BYTES**::
-
-This way you could tell live-initramfs that your image starts at offset BYTES in
-the above specified or autodiscovered device, this could be useful to hide the
-Debian Live iso or image inside another iso or image, to create "clean" images.
-
- live-media-path=**PATH**::
-
-Sets the path to the live filesystem on the medium. By default, it is set to
-'/live' and you should not change that unless you have customized your media
-accordingly.
-
- live-media-timeout=**SECONDS**::
-
-Set the timeout in seconds for the device specified by "live-media=" to become
-ready before giving up.
-
- {locale|debian-installer/locale}=**LOCALE**::
-
-Configure the running locale as specified, if not present the live-media rootfs
-configured locale will be used and if also this one misses live-initramfs behave
-as "locale=en_US.UTF-8" was specified. If only 2 lowercase letter are specified
-(like "it"), the "maybe wanted" locale is generated (like en:EN.UTF-8), in this
-case if also "keyb=" is unspecified is set with those 2 lowercase letters
-(keyb=us). Beside that facility, only UTF8 locales are supported by
-live-initramfs.
-
- module=**NAME**::
-
-Instead of using the default optional file "filesystem.module" (see below)
-another file could be specified without the extension ".module"; it should be
-placed on "/live" directory of the live medium.
-
- netboot[=**nfs**|**cifs**]::
-
-This tells live-initramfs to perform a network mount. The parameter "nfsroot="
-(with optional "nfsopts="), should specify where is the location of the root
-filesystem. With no args, will try cifs first, and if it fails nfs.
-
- nfsopts=::
-
-This lets you specify custom nfs options.
-
- noautologin::
-
-This parameter disables the automatic terminal login only, not touching gdk/kdm.
-
- noxautologin::
-
-This parameter disables the automatic login of gdm/kdm only, not touching
-terminals.
-
- nofastboot::
-
-This parameter disables the default disabling of filesystem checks in
-/etc/fstab. If you have static filesystems on your harddisk and you want them to
-be checked at boot time, use this parameter, otherwise they are skipped.
-
- nopersistent::
-
-disables the "persistent" feature, useful if the bootloader (like syslinux) has
-been installed with persistent enabled.
-
- noprompt
-
-Do not prompt to eject the CD or remove the USB flash drive on reboot.
-
- nosudo::
-
-This parameter disables the automatic configuration of sudo.
-
- swapon::
-
-This parameter enables usage of local swap partitions.
-
- nouser::
-
-This parameter disables the creation of the default user completely.
-
- noxautoconfig::
-
-This parameter disables Xorg auto-reconfiguration at boot time. This is valuable
-if you either do the detection on your own, or, if you want to ship a custom,
-premade xorg.conf in your live system.
-
- persistent[=nofiles]::
-
-live-initramfs will look for persistent and snapshot partitions or files labeled
-"live-rw", "home-rw", and files called "live-sn*", "home-sn*" and will try to,
-in order: mount as /cow the first, mount the second in /home, and just copy the
-contents of the latter in appropriate locations (snapshots). Snapshots will be
-tried to be updated on reboot/shutdown. Look at live-snapshot(1) for more
-informations. If "nofiles" is specified, only filesystems with matching labels
-will be searched; no filesystems will be traversed looking for archives or image
-files. This results in shorter boot times.
-
- persistent-path=PATH
-
-live-initramfs will look for persistency files in the root directory of a partition,
-with this parameter, the path can be configured so that you can have multiple
-directories on the same partition to store persistency files.
-
- {preseed/file|file}=**FILE**::
-
-A path to a file present on the rootfs could be used to preseed debconf
-database.
-
- package/question=**VALUE**::
-
-All debian installed packages could be preseeded from command-line that way,
-beware of blanks spaces, they will interfere with parsing, use a preseed file in
-this case.
-
- quickreboot::
-
-This option causes live-initramfs to reboot without attempting to eject the
-media and without asking the user to remove the boot media.
-
- showmounts::
-
-This parameter will make live-initramfs to show on "/" the ro filesystems
-(mostly compressed) on "/live". This is not enabled by default because could
-lead to problems by applications like "mono" which store binary paths on
-installation.
-
- silent
-
-If you boot with the normal quiet parameter, live-initramfs hides most messages
-of its own. When adding silent, it hides all.
-
- textonly
-
-Start up to text-mode shell prompts, disabling the graphical user interface.
-
- timezone=**TIMEZONE**::
-
-By default, timezone is set to UTC. Using the timezone parameter, you can set it
-to your local zone, e.g. Europe/Zurich.
-
- todisk=**DEVICE**::
-
-Adding this parameter, live-initramfs will try to copy the entire read-only
-media to the specified device before mounting the root filesystem. It probably
-needs a lot of free space. Subsequent boots should then skip this step and just
-specify the "live-media=DEVICE" boot parameter with the same DEVICE used this
-time.
-
- toram::
-
-Adding this parameter, live-initramfs will try to copy the whole read-only media
-to the computer's RAM before mounting the root filesystem. This could need a lot
-of ram, according to the space used by the read-only media.
-
- union=**aufs**|**unionfs**::
-
-By default, live-initramfs uses aufs. With this parameter, you can switch to
-unionfs.
-
- utc=**yes**|**no**::
-
-By default, Debian systems do assume that the hardware clock is set to UTC. You
-can change or explicitly set it with this parameter.
-
- xdebconf::
-
-Uses xdebconfigurator, if present on the rootfs, to configure X instead of the
-standard procedure (experimental).
-
- xvideomode=**RESOLUTION**::
-
-Doesn't do xorg autodetection, but enforces a given resolution.
-
-Files
------
-
- /etc/live.conf
-
-Some variables can be configured via this config file (inside the live system).
-
- /live/filesystem.module
-
-This optional file (inside the live media) contains a list of white-space or
-carriage-return-separated file names corresponding to disk images in the "/live"
-directory. If this file exists, only images listed here will be merged into the
-root aufs, and they will be loaded in the order listed here. The first entry
-in this file will be the "lowest" point in the aufs, and the last file in
-this list will be on the "top" of the aufs, directly below /cow. Without
-this file, any images in the "/live" directory are loaded in alphanumeric order.
-
- /etc/live-persistence.binds
-
-This optional file (which resides in the rootfs system, not in the live media)
-is used as a list of directories which not need be persistent: ie. their
-content does not need to survive reboots when using the persistence features.
-
-This saves expensive writes and speeds up operations on volatile data such as
-web caches and temporary files (like e.g. /tmp and .mozilla) which are
-regenerated each time. This is achieved by bind mounting each listed directory
-with a tmpfs on the original path.
-
-
-See also
---------
-
-live-snapshot(1), initramfs-tools(8), live-helper(7), live-initscripts(7),
-live-webhelper(7)
-
-Bugs
-----
-
-Report bugs against live-initramfs
-link:http://packages.qa.debian.org/live-initramfs[http://packages.qa.debian.org/live-initramfs].
-
-Homepage
---------
-
-More information about the Debian Live project can be found at
-link:http://debian-live.alioth.debian.org/[http://debian-live.alioth.debian.org/] and
-link:http://wiki.debian.org/DebianLive/[http://wiki.debian.org/DebianLive/].
-
-Authors
--------
-
-live-initramfs is maintained by Daniel Baumann <daniel@debian.org>
-for the Debian project.
-
-live-initramfs is a fork of link:http://packages.ubuntu.com/casper/[casper].
-casper was originally written by Tollef Fog Heen <tfheen@canonical.com>
-and Matt Zimmerman <mdz@canonical.com>.