[src/trunk]: src/sbin/gpt Use less bogus CHS addresses in PMBR.

[jakllsch <jakllsch%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9f9d81dcbb8b
branches:  trunk
changeset: 760523:9f9d81dcbb8b
user:      jakllsch <jakllsch%NetBSD.org@localhost>
date:      Thu Jan 06 17:42:10 2011 +0000

description:
Use less bogus CHS addresses in PMBR.
With the ending head set at 0xff one machine I have will never leave
the initial startup screen if such a disk is present.  Additionally,
Wikipedia suggests without citiation that 254 is the maximium allowable
value for the head, and this seems to be the case.

diffstat:

 sbin/gpt/create.c |  10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diffs (28 lines):

diff -r 8ac9f8c7ba39 -r 9f9d81dcbb8b sbin/gpt/create.c
--- a/sbin/gpt/create.c Thu Jan 06 17:22:14 2011 +0000
+++ b/sbin/gpt/create.c Thu Jan 06 17:42:10 2011 +0000
@@ -29,7 +29,7 @@
 __FBSDID("$FreeBSD: src/sbin/gpt/create.c,v 1.11 2005/08/31 01:47:19 marcel Exp $");
 #endif
 #ifdef __RCSID
-__RCSID("$NetBSD: create.c,v 1.3 2007/12/18 21:46:46 riz Exp $");
+__RCSID("$NetBSD: create.c,v 1.4 2011/01/06 17:42:10 jakllsch Exp $");
 #endif
 
 #include <sys/types.h>
@@ -100,11 +100,11 @@
                mbr = gpt_read(fd, 0LL, 1);
                bzero(mbr, sizeof(*mbr));
                mbr->mbr_sig = htole16(MBR_SIG);
-               mbr->mbr_part[0].part_shd = 0xff;
-               mbr->mbr_part[0].part_ssect = 0xff;
-               mbr->mbr_part[0].part_scyl = 0xff;
+               mbr->mbr_part[0].part_shd = 0x00;
+               mbr->mbr_part[0].part_ssect = 0x02;
+               mbr->mbr_part[0].part_scyl = 0x00;
                mbr->mbr_part[0].part_typ = 0xee;
-               mbr->mbr_part[0].part_ehd = 0xff;
+               mbr->mbr_part[0].part_ehd = 0xfe;
                mbr->mbr_part[0].part_esect = 0xff;
                mbr->mbr_part[0].part_ecyl = 0xff;
                mbr->mbr_part[0].part_start_lo = htole16(1);