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Date: Wed, 27 Sep 1995 00:23:06 -0400
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Subject: kern/742: syslog errors accessing Mac hard disks [patch]
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>Number:         742
>Category:       kern
>Synopsis:       syslog errors accessing Mac hard disks [patch]
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Sep 26 21:30:01 PDT 1995
>Last-Modified:
>Originator:     Sujal Patel
>Organization:
>Release:        FreeBSD 2.0-BUILT-19950628 i386
>Environment:

	

>Description:

Every access to Mac hard disks causes errors because the partition table is
not valid.  It gets a little ugly after a lot of accesses :)

>How-To-Repeat:

if /dev/sd2 is a Mac disk:
more < /dev/sd2

>Fix:
	
Patch to detect and ignore Mac disks is attached (/usr/src/sys/i386/isa):

--- diskslice_machdep.c.old	Tue Sep 12 04:46:57 1995
+++ diskslice_machdep.c	Tue Sep 26 23:58:32 1995
@@ -208,6 +208,12 @@
 	cp = bp->b_un.b_addr;
 	sname = dsname(dname, dkunit(dev), WHOLE_DISK_SLICE, RAW_PART,
 		       partname);
+        /* Ignore Mac disks */
+	if (cp[0] == 0x45 && cp[1] == 0x52 && 
+	   (cp[0x1FE] != 0x55 || cp[0x1FF] != 0xAA)) {
+		error = EINVAL;
+		goto done;
+	}
 	if (cp[0x1FE] != 0x55 || cp[0x1FF] != 0xAA) {
 		printf("%s: invalid primary partition table: no magic\n",
 		       sname);
>Audit-Trail:
>Unformatted: