--- GENERIC	2019-10-31 17:01:48.000000000 -0700
+++ GENERIC_COMPAT10	2020-02-20 05:48:14.233128000 -0800
@@ -19,7 +19,7 @@
 # $FreeBSD: releng/12.1/sys/amd64/conf/GENERIC 346179 2019-04-13 08:52:52Z dim $
 
 cpu		HAMMER
-ident		GENERIC
+ident		GENERIC_COMPAT10
 
 makeoptions	DEBUG=-g		# Build kernel with gdb(1) debug symbols
 makeoptions	WITH_CTF=1		# Run ctfconvert(1) for DTrace support
@@ -56,13 +56,13 @@
 options 	GEOM_LABEL		# Provides labelization
 options 	EFIRT			# EFI Runtime Services support
 options 	COMPAT_FREEBSD32	# Compatible with i386 binaries
-options 	COMPAT_FREEBSD4		# Compatible with FreeBSD4
-options 	COMPAT_FREEBSD5		# Compatible with FreeBSD5
-options 	COMPAT_FREEBSD6		# Compatible with FreeBSD6
-options 	COMPAT_FREEBSD7		# Compatible with FreeBSD7
-options 	COMPAT_FREEBSD9		# Compatible with FreeBSD9
+#options 	COMPAT_FREEBSD4		# Compatible with FreeBSD4
+#options 	COMPAT_FREEBSD5		# Compatible with FreeBSD5
+#options 	COMPAT_FREEBSD6		# Compatible with FreeBSD6
+#options 	COMPAT_FREEBSD7		# Compatible with FreeBSD7
+#options 	COMPAT_FREEBSD9		# Compatible with FreeBSD9
 options 	COMPAT_FREEBSD10	# Compatible with FreeBSD10
-options 	COMPAT_FREEBSD11	# Compatible with FreeBSD11
+#options 	COMPAT_FREEBSD11	# Compatible with FreeBSD11
 options 	SCSI_DELAY=5000		# Delay (in ms) before probing SCSI
 options 	KTRACE			# ktrace(1) support
 options 	STACK			# stack(9) support