Fix legacy booting.

Don't flag the EFI SYS partition "DOSACTIVE". Leave that status
to the OpenBSD partition. Reverts part of r1.77.

Problem reported and fix tested by Mihai Popescu. Thanks!

Cluebats from deraadt@ and code bisecting by dv@.

ok kettenis@

diff --git a/sbin/fdisk/mbr.c b/sbin/fdisk/mbr.c
index 9a0ec6c..6bedb18 100644 (file)
--- a/sbin/fdisk/mbr.c
+++ b/sbin/fdisk/mbr.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: mbr.c,v 1.77 2021/06/20 18:44:19 krw Exp $    */
+/*     $OpenBSD: mbr.c,v 1.78 2021/07/04 20:37:11 krw Exp $    */
 
 /*
  * Copyright (c) 1997 Tobias Weingartner
@@ -135,12 +135,10 @@ MBR_init(struct mbr *mbr)
        PRT_fix_BN(&mbr->part[3], 3);
 #else
        if (b_sectors > 0) {
-               mbr->part[0].flag = DOSACTIVE;
                mbr->part[0].id = b_type;
                mbr->part[0].bs = b_offset;
                mbr->part[0].ns = b_sectors;
                PRT_fix_CHS(&mbr->part[0]);
-               mbr->part[3].flag = 0;
                mbr->part[3].ns += mbr->part[3].bs;
                mbr->part[3].bs = mbr->part[0].bs + mbr->part[0].ns;
                mbr->part[3].ns -= mbr->part[3].bs;