diff --git a/setup.sh b/setup.sh
index 37389ec..a04fe11 100644
--- a/setup.sh
+++ b/setup.sh
@@ -127,6 +127,13 @@ function select_part () {
     return 0
 }
 
+function no_zpool_exists () {
+    declare zpool_list
+    zpool_list="$(zpool list -H)"
+    [[ "$(wc -l <<<"${zpool_list}")" -le '1' ]] && [[ "$(wc -c <<<"${zpool_list}")" -le '1' ]] && return 0
+    return 1
+}
+
 function set_zpool_password () {
     # May or may not have a newline at the end, ZFS doesn't care
     printf -- '%s' 'password' > '/etc/zfs/'"${zpool_name}"'.key'