1-install: convert GPT to MBR for legacy GRUB

Installing legacy GRUB to GPT won't work. Try to convert GPT to MBR
if users agree.

diff --git a/install/scripts/1-install b/install/scripts/1-install
index 20261d9..af4c486 100644 (file)
--- a/install/scripts/1-install
+++ b/install/scripts/1-install
@@ -383,8 +383,19 @@ install_to()
        [ -z "$efi" ] && adialog --title " Confirm " --no-label Skip --defaultno --yesno \
                "\n Do you want to install boot loader GRUB?" 7 47
        if [ $? -eq 0 ]; then
-               cp -af /grub /hd
                get_part_info $1
+               if fdisk -l /dev/$disk | grep -q GPT; then
+                       umount /hd
+                       dialog --title " Warning " --defaultno --yesno \
+                               "\nFound GPT on /dev/$disk. The legacy GRUB can't be installed to GPT. Do you want to convert it to MBR?\n\nWARNING: This is a dangerous operation. You should backup your data first." 11 63
+                       [ $? -eq 1 ] && rebooting
+                       plist=$(sgdisk --print /dev/$disk | awk '/^  / { printf "%s:", $1 }' | sed 's/:$//')
+                       sgdisk --gpttombr=$plist /dev/$disk > /dev/tty6
+                       until try_mount rw /dev/$1 /hd; do
+                               sleep 1
+                       done
+               fi
+               cp -af /grub /hd
                p=$(($p-1))
                create_menulst $p
                create_winitem $1 $d
@@ -508,6 +519,7 @@ install_to()
 
        dialog --infobox "\n Syncing to disk..." 5 27
        sync
+       cd /
 
        return $result
 }