Die in case of multiple initrds for the Linux kernel

[novaboot.git] / README.pod

diff --git a/README.pod b/README.pod
index 3472d52f7acd25b0b903c5e013c527bf23136a10..dff5ae6fb30cf54b1a94b4c7bcb7ccaad464d20b 100644 (file)
--- a/README.pod
+++ b/README.pod
@@ -371,10 +371,14 @@ Alias for B<--prefix>.
 =item --grub2[=I<filename>]
 
 Generate GRUB2 menu entry in I<filename>. If I<filename> is not
-specified F<grub.cfg> is used. The content of the menu entry can be
+specified F<./boot/grub/grub.cfg> is used. The content of the menu entry can be
 customized with B<--grub-preamble>, B<--grub2-prolog> or
 B<--grub_prefix> options.
 
+GRUB2 can boot multiboot-compliant kernels and a few kernels with specific
+support. L</BOOT_METHOD> could be used to specify the command used by GRUB2 to
+load the kernel. See L<GNU GRUB Manual|https://www.gnu.org/software/grub/manual/grub/grub.html#Booting>.
+
 To use the generated menu entry on your development
 machine that uses GRUB2, append the following snippet to
 F</etc/grub.d/40_custom> file and regenerate your grub configuration,
@@ -931,6 +935,11 @@ The following variables are interpreted in the novaboot script:
 
 =over 8
 
+=item BOOT_METHOD
+
+Specifies the way GRUB2 boots the kernel. For kernels with multiboot
+support use C<multiboot> method (the default). For Linux kernel use C<linux> method.
+
 =item BUILDDIR
 
 Novaboot chdir()s to this directory before file generation phase. The