[PATCH] document GRUB_DISABLE_SUBMENU

[Andrey Borzenkov <arvidjaar@gmail.com>]

Signed-off-by: Andrey Borzenkov <arvidjaar@gmail.com>

---
 docs/grub.texi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/docs/grub.texi b/docs/grub.texi
index fced603..fbabea8 100644
--- a/docs/grub.texi
+++ b/docs/grub.texi
@@ -1450,6 +1450,14 @@ Normally, @command{grub-mkconfig} will try to use the external
 systems installed on the same system and generate appropriate menu entries
 for them.  Set this option to @samp{true} to disable this.
 
+@item GRUB_DISABLE_SUBMENU
+Normally, @command{grub-mkconfig} will generate top level menu entry for
+the kernel with highest version number and put all other found kernels
+or alternative menu entries for recovery mode in submenu. For entries returned
+by @command{os-prober} first entry will be put on top level and all others
+in submenu. If this option is set to @samp{y}, flat menu with all entries
+on top level will be generated instead.
+
 @item GRUB_ENABLE_CRYPTODISK
 If set to @samp{y}, @command{grub-mkconfig} and @command{grub-install} will
 check for encrypted disks and generate additional commands needed to access
-- 
tg: (6750892..) u/grub_disable_submenu (depends on: master)