From 1e0e0b993f6bbdd1eddc22970bf49158103cf6e4 Mon Sep 17 00:00:00 2001
From: Ivan Vilata-i-Balaguer <ivan@selidor.net>
Date: Mon, 21 Nov 2016 12:53:10 +0100
Subject: [PATCH 1/2] Se usa el GRUB local para instalar el arranque
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Esta opción es más sencilla (no hace falta preparar el entorno ``chroot``) y
además funciona tanto si el sistema instalado es de 32 bits como si es de 64.

En cambio, necesita que el paquete ``grub2-common`` (para el ejecutable
``grub-install``) esté instalado en el sistema donde se ejecuta el script.
---
 instalar | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/instalar b/instalar
index af1d211..43bf8f8 100644
--- a/instalar
+++ b/instalar
@@ -117,25 +117,22 @@ fi
 function grub_install(){
 echo "* Instalación de GRUB *"
 
-echo "Montando $HD y sus particiones..."
+echo "Montando ${HD}1..."
 mkdir /tmp/root
 mount "$HD"1 /tmp/root
-mount -t proc proc /tmp/root/proc
-mount -t sysfs sys /tmp/root/sys
-mount -o bind /dev /tmp/root/dev
 
-echo "Instalando y configurando GRUB..."
-chroot /tmp/root update-grub2 &> /dev/null
-chroot /tmp/root grub-install $HD &> /dev/null
+echo "Instalando GRUB..."
+grub-install \
+     --directory=/tmp/root/usr/lib/grub/i386-pc \
+     --locale-directory=/tmp/root/usr/share/locale \
+     --boot-directory=/tmp/root/boot \
+     $HD &> /dev/null
 
 echo "Generando UUID $HD2 (swap)..."
 OLD_SWAP_UUID=`cat /tmp/root/etc/fstab | grep swap | grep 'UUID' | cut -d "=" -f 2 | cut -d " " -f 1`
 sed -i "s/$OLD_SWAP_UUID/$NEW_SWAP_UUID/g" /tmp/root/etc/fstab
 
-echo "Desmontando $HD y sus particiones"
-umount /tmp/root/dev
-umount /tmp/root/sys
-umount /tmp/root/proc
+echo "Desmontando ${HD}1"
 umount /tmp/root
 rmdir /tmp/root
 }

From 3c20724953777c42c5d16ca1e40235d7eb44bbb5 Mon Sep 17 00:00:00 2001
From: Ivan Vilata-i-Balaguer <ivan@selidor.net>
Date: Mon, 21 Nov 2016 13:47:03 +0100
Subject: [PATCH 2/2] =?UTF-8?q?L=C3=ADnea=20de=20=C3=B3rdenes=20m=C3=A1s?=
 =?UTF-8?q?=20simple=20para=20instalar=20GRUB?=
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Vía @reciclanet.
---
 instalar | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/instalar b/instalar
index 43bf8f8..48bbe12 100644
--- a/instalar
+++ b/instalar
@@ -124,8 +124,7 @@ mount "$HD"1 /tmp/root
 echo "Instalando GRUB..."
 grub-install \
      --directory=/tmp/root/usr/lib/grub/i386-pc \
-     --locale-directory=/tmp/root/usr/share/locale \
-     --boot-directory=/tmp/root/boot \
+     --root-directory=/tmp/root \
      $HD &> /dev/null
 
 echo "Generando UUID $HD2 (swap)..."