diff --git a/usr/bin/sfos-upgrade b/usr/bin/sfos-upgrade
index a28b0a1..a006a97 100644
--- a/usr/bin/sfos-upgrade
+++ b/usr/bin/sfos-upgrade
@@ -398,19 +398,22 @@ else
   if ! [ "$free_space" -gt "349525" ]
   then  # This hard ⅓ GiB limit is an rough estimate of an upper boundary for the sum of all RPM size increases by an upgrade plus space for the package management's indexes, caches etc. 
     echo "Aborting: Less than ⅓ GiB ($free_space KiB) free space on the root filesystem!" >&2
-    echo "Please clean up or enlarge the root filesystem before retrying." >&2
+    echo "Please clean up or enlarge the root filesystem before retrying, see e.g.:" >&2
+    echo "https://together.jolla.com/question/222126/guide-installing-sailfish-x-on-xperias/#222126-33-increasing-the-root-lvm-volume-size" >&2
     exit 1
   elif ! [ "$free_space" -gt "699050" ]
   then  # As the largest SailfishOS upgrades (Jolla's estimates, in 2019 & 2020: the sum of all updated default RPMs sizes, when upgrading from the direct predecessor release) have been slightly under 500 MiB regularly, a ⅔ GiB limit to warn explicitly seems to be reasonable.
     echo "Warning: Less than ⅔ GiB ($free_space KiB) free space on the root filesystem!" >&2
-    echo "Please consider to abort and to clean up or enlarge the root filesystem before retrying." >&2
+    echo "Please consider to abort and to clean up or enlarge the root filesystem before retrying, see e.g.:" >&2
+    echo "https://together.jolla.com/question/222126/guide-installing-sailfish-x-on-xperias/#222126-33-increasing-the-root-lvm-volume-size" >&2
     echo -n "Do you want to continue?" >&2
     askyes >&2
     echo >&2
   elif ! [ "$free_space" -ge "1048576" ]
   then  # This 1 GiB limit to emit a soft low space notice is intended to trigger users early to do something about it.
     echo "Notice: Less than 1 GiB ($free_space KiB) free space on the root filesystem!" >&2
-    echo "Please consider to clean up or enlarge the root filesystem." >&2
+    echo "Please consider to clean up or enlarge the root filesystem, see e.g.:" >&2
+    echo "https://together.jolla.com/question/222126/guide-installing-sailfish-x-on-xperias/#222126-33-increasing-the-root-lvm-volume-size" >&2
     echo >&2
   fi
 fi