diff --git a/iso-sanity/README.md b/iso-sanity/README.md
new file mode 100644
index 0000000..0165f2a
--- /dev/null
+++ b/iso-sanity/README.md
@@ -0,0 +1 @@
+Run `virt-install` to install an ISO using both BIOS and EFI.
diff --git a/iso-sanity/check-iso-sanity.sh b/iso-sanity/check-iso-sanity.sh
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+++ b/iso-sanity/check-iso-sanity.sh
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+#!/usr/bin/env bash
+set -xeuo pipefail
+ISO=$1
+shift
+dn=$(dirname $0)
+
+tempdir=$(mktemp -d /var/tmp/isosanity.XXXXX)
+function cleanup () {
+    fusermount -u ${tempdir}/mnt || true
+    rm "${tempdir}" -rf
+}
+trap cleanup EXIT
+
+export LIBGUESTFS_BACKEND=direct
+mkdir ${tempdir}/mnt
+guestmount --ro -a ${ISO} -m /dev/sda1 ${tempdir}/mnt
+(cd ${tmpdir}/mnt && python -m SimpleHTTPServer 0 >../httpd.txt)
+success=false
+# FIXME - detect from libvirt/define our own?
+hostip=192.168.122.1
+for x in $(seq 30); do
+    sed -e s',Serving HTTP on 0.0.0.0 port \([0-9]*\) \.\.\.,\1,' < ${tempdir}/httpd.txt > ${tempdir}/port.txt
+    if cmp ${tempdir}/httpd.txt ${tempdir}/port.txt; then
+        port=$(tr -d '\n' < ${tempdir}/port.txt)
+        if curl "http://${hostip}:${port}"; then
+            success=true
+            break
+        fi
+    fi
+    sleep 0.1
+done
+if !${success}; then
+    echo "Failed to wait for http server"
+    exit 1
+fi
+
+# --initrd-inject ${dn}/default.ks --extra-args=inst.ks=file:/default.ks
+base_args="--ram 3192 --vcpus 4 --disk size=20 --os-variant rhel7 --location http://${hostip}:${port}/"
+
+virsh -c qemu:///system undefine isosanity-efi || true
+virt-install ${base_args} --name isosanity-efi --boot uefi
+virsh -c qemu:///system undefine isosanity-bios || true
+virt-install ${base_args} --name isosanity-bios
diff --git a/iso-sanity/default.ks b/iso-sanity/default.ks
new file mode 100644
index 0000000..c84b266
--- /dev/null
+++ b/iso-sanity/default.ks
@@ -0,0 +1 @@
+%include /usr/share/anaconda/interactive-defaults.ks