Author: emaste
Date: Wed May 24 17:11:10 2017
New Revision: 318792
URL: https://svnweb.freebsd.org/changeset/base/318792

Log:
  UPDATING: clarify ino64 upgrade instructions even further
  
  - mention COMPAT_FREEBSD11 earlier so that the steps are in chronological
    order
  - suggest removing /usr/obj before build to ensure there are no stale
    objects
  
  Reviewed by:  allanjude, kib
  Sponsored by: The FreeBSD Foundation

Modified:
  head/UPDATING

Modified: head/UPDATING
==============================================================================
--- head/UPDATING       Wed May 24 16:39:19 2017        (r318791)
+++ head/UPDATING       Wed May 24 17:11:10 2017        (r318792)
@@ -53,12 +53,19 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 12
 
 20170523:
        The "ino64" 64-bit inode project has been committed, which extends
-       a number of types to 64 bits.  In order to upgrade, carefully follow
-       the full procedure documented below under the heading "To rebuild
-       everything and install it on the current system."  Specifically, a
-       reboot is required after installing the new kernel before installing
-       world.  In addition, if using a custom kernel configuration ensure
-       that the COMPAT_FREEBSD11 option is included.
+       a number of types to 64 bits.  Upgrading in place requires care and
+       adherence to the documented upgrade procedure.
+
+       If using a custom kernel configuration ensure that the
+       COMPAT_FREEBSD11 option is included (as during the upgrade the
+       system will be running the ino64 kernel with the existing world).
+
+       For the safest in-place upgrade begin by removing previous build
+       artifacts via "rm -rf /usr/obj/*".   Then, carefully follow the
+       full procedure documented below under the heading "To rebuild
+       everything and install it on the current system."  Specifically,
+       a reboot is required after installing the new kernel before
+       installing world.  
 
 20170424:
        The NATM framework including the en(4), fatm(4), hatm(4), and
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