Author: marcel
Date: Mon Aug 17 16:16:46 2009
New Revision: 196333
URL: http://svn.freebsd.org/changeset/base/196333
Log:
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 <k...@khauser.net>
Approved by: re (kib)
Modified:
head/sys/geom/part/g_part_gpt.c
Modified: head/sys/geom/part/g_part_gpt.c
==============================================================================
--- head/sys/geom/part/g_part_gpt.c Mon Aug 17 16:12:28 2009
(r196332)
+++ head/sys/geom/part/g_part_gpt.c Mon Aug 17 16:16:46 2009
(r196333)
@@ -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 */
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