--- parted-2.3/libparted/labels/gpt.c.orig	2013-04-19 15:19:45.000000000 +0200
+++ parted-2.3/libparted/labels/gpt.c	2013-04-19 15:20:03.000000000 +0200
@@ -1160,6 +1160,9 @@ _part_to_ostype (PedPartition* part)
         if (strncmp (part->fs_type->name, "hfs", 3) == 0) return 0xaf;
         if (strstr (part->fs_type->name, "swap")) return 0x82;
     }
+#ifdef __PPC__
+    if (part->num == 1) return 0x41; /* PARTITION_PREP */
+#endif
     return 0x83; // Everything else is Linux
 }