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| -rw-r--r-- | doc/guix.texi | 81 |
1 files changed, 79 insertions, 2 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index 9939e6647f..2ebf56f111 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -3260,6 +3260,7 @@ instance to support new system services. * Services:: Specifying system services. * Setuid Programs:: Programs running with root privileges. * Initial RAM Disk:: Linux-Libre bootstrapping. +* GRUB Configuration:: Configuring the boot loader. * Invoking guix system:: Instantiating a system configuration. * Defining Services:: Adding new service definitions. @end menu @@ -3370,8 +3371,7 @@ only the Linux-libre kernel is supported. In the future, it will be possible to use the GNU@tie{}Hurd.}. @item @code{bootloader} -The system bootloader configuration object. -@c FIXME: Add xref to bootloader section. +The system bootloader configuration object. @xref{GRUB Configuration}. @item @code{initrd} (default: @code{base-initrd}) A two-argument monadic procedure that returns an initial RAM disk for @@ -4093,6 +4093,83 @@ automatically copied to the initrd. initrd. @end deffn +@node GRUB Configuration +@subsection GRUB Configuration + +@cindex GRUB +@cindex boot loader + +The operating system uses GNU@tie{}GRUB as its boot loader +(@pxref{Overview, overview of GRUB,, grub, GNU GRUB Manual}). It is +configured using @code{grub-configuration} declarations. This data type +is exported by the @code{(gnu system grub)} module, and described below. + +@deftp {Data Type} grub-configuration +The type of a GRUB configuration declaration. + +@table @asis + +@item @code{device} +This is a string denoting the boot device. It must be a device name +understood by the @command{grub-install} command, such as +@code{/dev/sda} or @code{(hd0)} (@pxref{Invoking grub-install,,, grub, +GNU GRUB Manual}). + +@item @code{menu-entries} (default: @code{()}) +A possibly empty list of @code{menu-entry} objects (see below), denoting +entries to appear in the GRUB boot menu, in addition to the current +system entry and the entry pointing to previous system generations. + +@item @code{default-entry} (default: @code{0}) +The index of the default boot menu entry. Index 0 is for the current +system's entry. + +@item @code{timeout} (default: @code{5}) +The number of seconds to wait for keyboard input before booting. Set to +0 to boot immediately, and to -1 to wait indefinitely. + +@item @code{theme} (default: @var{%default-theme}) +The @code{grub-theme} object describing the theme to use. +@end table + +@end deftp + +Should you want to list additional boot menu entries @i{via} the +@code{menu-entries} field above, you will need to create them with the +@code{menu-entry} form: + +@deftp {Data Type} menu-entry +The type of an entry in the GRUB boot menu. + +@table @asis + +@item @code{label} +The label to show in the menu---e.g., @code{"GNU System"}. + +@item @code{linux} +The Linux kernel to boot. + +@item @code{linux-arguments} (default: @code{()}) +The list of extra Linux kernel command-line arguments---e.g., +@code{("console=ttyS0")}. + +@item @code{initrd} +A G-Expression or string denoting the file name of the initial RAM disk +to use (@pxref{G-Expressions}). + +@end table +@end deftp + +@c FIXME: Write documentation once it's stable. +Themes are created using the @code{grub-theme} form, which is not +documented yet. + +@defvr {Scheme Variable} %default-theme +This is the default GRUB theme used by the operating system, with a +fancy background image displaying the GNU and Guix logos. +@end defvr + + @node Invoking guix system @subsection Invoking @code{guix system} |