svn commit: r196335 - in stable/8/sys: . amd64/include/xen cddl/contrib/opensolaris contrib/dev/acpica contrib/pf dev/mfi dev/xen/xenpci geom/part

[Marcel Moolenaar]

Author: marcel
Date: Mon Aug 17 16:24:50 2009
New Revision: 196335
URL: http://svn.freebsd.org/changeset/base/196335

Log:
  MFC rev 196333:
  The start of the EFI GPT partition in the PMBR can always be represented
  by CHS addressing. Don't define these fields as 0xff, but rather define
  them correctly. This prevents boot problems on PCs where GPT is being
  used.
  
  PR:             115406
  Submitted by:   Kent Hauser <kent at khauser.net>
  Approved by:    re (kib)

Modified:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/mfi/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)
  stable/8/sys/geom/part/g_part_gpt.c

Modified: stable/8/sys/geom/part/g_part_gpt.c
==============================================================================
--- stable/8/sys/geom/part/g_part_gpt.c	Mon Aug 17 16:17:21 2009	(r196334)
+++ stable/8/sys/geom/part/g_part_gpt.c	Mon Aug 17 16:24:50 2009	(r196335)
@@ -409,9 +409,9 @@ g_part_gpt_create(struct g_part_table *b
 	last = (pp->mediasize / pp->sectorsize) - 1;
 
 	le16enc(table->mbr + DOSMAGICOFFSET, DOSMAGIC);
-	table->mbr[DOSPARTOFF + 1] = 0xff;		/* shd */
-	table->mbr[DOSPARTOFF + 2] = 0xff;		/* ssect */
-	table->mbr[DOSPARTOFF + 3] = 0xff;		/* scyl */
+	table->mbr[DOSPARTOFF + 1] = 0x01;		/* shd */
+	table->mbr[DOSPARTOFF + 2] = 0x01;		/* ssect */
+	table->mbr[DOSPARTOFF + 3] = 0x00;		/* scyl */
 	table->mbr[DOSPARTOFF + 4] = 0xee;		/* typ */
 	table->mbr[DOSPARTOFF + 5] = 0xff;		/* ehd */
 	table->mbr[DOSPARTOFF + 6] = 0xff;		/* esect */