commit 0098e7bdb80fb7ffe55b8bc9086a16d0a65898e5
Author: Joel Granados Moreno <jgranado@redhat.com>
Date:   Mon Jun 22 11:37:26 2009 +0200

    Add mechanism to avoid cylinder alignments.

diff --git a/include/parted/disk.h b/include/parted/disk.h
index 172fbee..664c388 100644
--- a/include/parted/disk.h
+++ b/include/parted/disk.h
@@ -263,7 +263,8 @@ extern int ped_disk_get_last_partition_num (const PedDisk* disk);
 extern int ped_disk_get_max_primary_partition_count (const PedDisk* disk);
 extern bool ped_disk_get_max_supported_partition_count(const PedDisk* disk,
                                                        int* supported);
-
+extern int ped_disk_align_to_cylinders_on();
+extern int ped_disk_align_to_cylinders_toggle();
 /** @} */
 
 /**
diff --git a/libparted/disk.c b/libparted/disk.c
index 6884c83..44a2f2f 100644
--- a/libparted/disk.c
+++ b/libparted/disk.c
@@ -65,6 +65,23 @@ static int _disk_raw_add (PedDisk* disk, PedPartition* part);
 
 static PedDiskType*	disk_types = NULL;
 
+int ped_disk_align_to_cylinders = 1;
+
+int
+ped_disk_align_to_cylinders_toggle ()
+{
+	if (ped_disk_align_to_cylinders == 1)
+		return ped_disk_align_to_cylinders = 0;
+	else
+		return ped_disk_align_to_cylinders = 1;
+}
+
+int
+ped_disk_align_to_cylinders_on ()
+{
+	return ped_disk_align_to_cylinders;
+}
+
 void
 ped_disk_type_register (PedDiskType* disk_type)
 {
diff --git a/libparted/labels/dos.c b/libparted/labels/dos.c
index fc54339..e7d416d 100644
--- a/libparted/labels/dos.c
+++ b/libparted/labels/dos.c
@@ -2005,8 +2005,9 @@ msdos_partition_align (PedPartition* part, const PedConstraint* constraint)
 
 	partition_probe_bios_geometry (part, &bios_geom);
 
-	if (_align (part, &bios_geom, constraint))
-		return 1;
+	if (ped_disk_align_to_cylinders_on())
+		if (_align (part, &bios_geom, constraint))
+			return 1;
 	if (_align_no_geom (part, constraint))
 		return 1;