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-rw-r--r--doc/guix.texi22
1 files changed, 20 insertions, 2 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 6d3361878b..7ed8ee8130 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -10622,9 +10622,23 @@ The @code{grub-theme} object describing the theme to use.
@end deftp
+@cindex dual boot
+@cindex boot menu
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:
+@code{menu-entry} form. For example, imagine you want to be able to
+boot another distro (hard to imagine!), you can define a menu entry
+along these lines:
+
+@example
+(menu-entry
+ (label "The Other Distro")
+ (linux "/boot/old/vmlinux-2.6.32")
+ (linux-arguments '("root=/dev/sda2"))
+ (initrd "/boot/old/initrd"))
+@end example
+
+Details below.
@deftp {Data Type} menu-entry
The type of an entry in the GRUB boot menu.
@@ -10635,7 +10649,11 @@ The type of an entry in the GRUB boot menu.
The label to show in the menu---e.g., @code{"GNU"}.
@item @code{linux}
-The Linux kernel to boot.
+The Linux kernel image to boot, for example:
+
+@example
+(file-append linux-libre "/bzImage")
+@end example
@item @code{linux-arguments} (default: @code{()})
The list of extra Linux kernel command-line arguments---e.g.,