Index: sys/geom/part/g_part_gpt.c
===================================================================
--- sys/geom/part/g_part_gpt.c	(revision 285411)
+++ sys/geom/part/g_part_gpt.c	(working copy)
@@ -291,7 +291,11 @@
 {
 
 	bzero(table->mbr + DOSPARTOFF, DOSPARTSIZE * NDOSPART);
-	gpt_write_mbr_entry(table->mbr, 0, 0xee, 1,
+	/*
+	 * Create the PMBR 0xee partition at offset 1 instead of 0
+	 * to work around BIOS bug in older Lenovos (X220, T420, etc)
+	 */
+	gpt_write_mbr_entry(table->mbr, 1, 0xee, 1,
 	    MIN(pp->mediasize / pp->sectorsize - 1, UINT32_MAX));
 	le16enc(table->mbr + DOSMAGICOFFSET, DOSMAGIC);
 }