--- /usr/bin/genfstab	2019-01-05 16:26:33.000000000 +0000
+++ genfstab	2019-07-02 08:31:55.751942239 +0000
@@ -477,7 +477,7 @@
     [[ $device = *'\040(deleted)' ]] && continue
 
     if [[ $type = file ]]; then
-      printf '%-20s' "$device"
+      printf '%-20s' "${device#$root}"
     elif [[ $device = /dev/dm-+([0-9]) ]]; then
       # device mapper doesn't allow characters we need to worry
       # about being mangled, and it does the escaping of dashes