diff --git a/iso/Makefile b/iso/Makefile
index b64444494b..9cc74d01c8 100644
--- a/iso/Makefile
+++ b/iso/Makefile
@@ -80,7 +80,9 @@ $(ISOROOT)/astute-0.0.1.gem:
 $(ISOROOT)/.discinfo: $(SOURCE_DIR)/.discinfo ; $(ACTION.COPY)
 $(ISOROOT)/.treeinfo: $(SOURCE_DIR)/.treeinfo ; $(ACTION.COPY)
 $(ISOROOT)/isolinux/isolinux.cfg: $(SOURCE_DIR)/isolinux/isolinux.cfg ; $(ACTION.COPY)
-$(ISOROOT)/ks.cfg: $(SOURCE_DIR)/ks.cfg ; $(ACTION.COPY)
+$(ISOROOT)/ks.cfg: $(SOURCE_DIR)/ks.cfg; $(ACTION.COPY)
+	[ -z "$$TGTDRIVE" ] || sed -i "s/^\(tgtdrive=\)\".*\"$$/\1\"$$TGTDRIVE\"/" $@
+	[ -z "$$USEEXTIF" ] || sed -i "s/^\(network\s*--bootproto=dhcp\.*\)/\1 --device=$$USEEXTIF/" $@
 $(ISOROOT)/bootstrap_admin_node.sh: $(SOURCE_DIR)/bootstrap_admin_node.sh ; $(ACTION.COPY)
 $(ISOROOT)/functions.sh: $(SOURCE_DIR)/functions.sh ; $(ACTION.COPY)
 $(ISOROOT)/bootstrap_admin_node.conf: $(SOURCE_DIR)/bootstrap_admin_node.conf ; $(ACTION.COPY)
diff --git a/iso/ks.cfg b/iso/ks.cfg
index 4b41e84d53..799cebbe79 100644
--- a/iso/ks.cfg
+++ b/iso/ks.cfg
@@ -8,9 +8,8 @@ selinux --disabled
 url --url http://mirror.stanford.edu/yum/pub/centos/6.3/os/x86_64/
 network --bootproto=dhcp
 repo --name=Base --mirrorlist=http://mirrorlist.centos.org/?release=6.3&arch=x86_64&repo=os
-#repo --name=Base --baseurl=http://172.18.67.168/centos-repo/centos-6.3
 repo --name=Updates --mirrorlist=http://mirrorlist.centos.org/?release=6.3&arch=x86_64&repo=updates
-repo --name=Mirantis --mirrorlist=http://download.mirantis.com/epel-fuel-folsom/mirror.internal.list
+repo --name=Mirantis --mirrorlist=http://download.mirantis.com/epel-fuel-folsom/mirror.external.list
 repo --name=PuppetLabs --baseurl=http://yum.puppetlabs.com/el/6/products/x86_64/
 keyboard us
 rootpw r00tme
@@ -25,7 +24,7 @@ clearpart --all --initlabel
 
 # hard drives
 drives=""
-for drv in `ls -1 /sys/block | grep "sd\|hd\|vd"`; do
+for drv in `ls -1 /sys/block | grep -e "sd\|hd\|vd"`; do
     if (grep -q 0 /sys/block/${drv}/removable); then
         drives="${drives} ${drv}"
     fi