=== modified file 'ubiquity/components/summary.py'
--- ubiquity/components/summary.py	2008-08-08 14:22:31 +0000
+++ ubiquity/components/summary.py	2008-10-11 06:55:55 +0000
@@ -28,6 +28,36 @@
 
 from ubiquity.filteredcommand import FilteredCommand
 
+def find_grub_target():
+    # This needs to be somewhat duplicated from grub-installer here because we
+    # need to be able to show the user what device GRUB will be installed to
+    # well before grub-installer is run.
+    try:
+        boot = ''
+        root = ''
+        os.seteuid(0)
+        p = PartedServer()
+        for disk in p.disks():
+            p.select_disk(disk)
+            for part in p.partitions():
+                part = part[1]
+                if p.has_part_entry(part, 'mountpoint'):
+                    mp = p.readline_part_entry(part, 'mountpoint')
+                    if mp == '/boot':
+                        boot = disk.replace('=', '/')
+                    elif mp == '/':
+                        root = disk.replace('=', '/')
+        drop_privileges()
+        if boot:
+            return boot
+        elif root:
+            return root
+    except Exception, e:
+        import syslog
+        syslog.syslog('Exception in find_grub_target: ' + str(e))
+        return '(hd0)'
+    return '(hd0)'
+
 def grub_options():
     """ Generates a list of suitable targets for grub-installer
         @return empty list or a list of ['/dev/sda1','Ubuntu Hardy 8.04'] """
@@ -107,7 +137,7 @@
             if os.access('/usr/share/grub-installer/grub-installer', os.X_OK):
                 # TODO cjwatson 2006-09-04: a bit inelegant, and possibly
                 # Ubuntu-specific?
-                self.frontend.set_summary_device('(hd0)')
+                self.frontend.set_summary_device(find_grub_target())
             else:
                 self.frontend.set_summary_device(None)