From eeaec0fc3be0a434a80398f5555b5f33e468d16e Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel@debian.org>
Date: Wed, 17 Feb 2010 12:18:34 +0100
Subject: Don't append and re-append try-usb parameter to bootappend-install
 options over and over again.

---
 functions/defaults.sh | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/functions/defaults.sh b/functions/defaults.sh
index f52578f..03b1554 100755
--- a/functions/defaults.sh
+++ b/functions/defaults.sh
@@ -782,7 +782,10 @@ Set_defaults ()
 	if [ "${LH_BINARY_IMAGES}" = "usb-hdd" ]
 	then
 		# Try USB block devices for install media
-		LH_BOOTAPPEND_INSTALL="cdrom-detect/try-usb=true ${LH_BOOTAPPEND_INSTALL}"
+		if ! echo "${LH_BOOTAPPEND_INSTALL}" | grep -q try-usb
+		then
+			LH_BOOTAPPEND_INSTALL="cdrom-detect/try-usb=true ${LH_BOOTAPPEND_INSTALL}"
+		fi
 	fi
 
 	if [ -n ${_LH_BOOTAPPEND_PRESEED} ]
-- 
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