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Add code that should preserve the 'drive serial number' field of the mbr.

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Ought to stop the installer from stopping windows vista from being bootable.
This commit is contained in:
dsl 2007-07-05 20:03:00 +00:00
parent 0c7234ef6a
commit c8ad8ea05b
1 changed files with 6 additions and 1 deletions
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7
distrib/utils/sysinst/arch/i386/md.c
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@ -1,4 +1,4 @@
/* $NetBSD: md.c,v 1.115 2006/11/19 19:01:26 dsl Exp $ */
/* $NetBSD: md.c,v 1.116 2007/07/05 20:03:00 dsl Exp $ */
/*
* Copyright 1997 Piermont Information Systems Inc.
@ -231,6 +231,7 @@ md_read_bootcode(const char *path, struct mbr_sector *mbrs)
struct stat st;
size_t len;
struct mbr_sector new_mbr;
uint32_t dsn;
fd = open(path, O_RDONLY);
if (fd < 0)
@ -255,7 +256,11 @@ md_read_bootcode(const char *path, struct mbr_sector *mbrs)
} else
len = offsetof(struct mbr_sector, mbr_parts);
/* Preserve the 'drive serial number' - especially for Vista */
dsn = mbrs->mbr_dsn;
memcpy(mbrs, &new_mbr, len);
mbrs->mbr_dsn = dsn;
/* Keep flags from object file - indicate the properties */
mbrs->mbr_bootsel.mbrbs_flags = new_mbr.mbr_bootsel.mbrbs_flags;
mbrs->mbr_magic = htole16(MBR_MAGIC);