diff --git a/mint/make_swapvol.sh b/mint/make_swapvol.sh
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+#!/bin/bash
+
+# skript baut ein subvol /@swap unten drunter und mountet das
+# ganze als /swap um darin /swap/swapfile als swapspace
+# zu aktivieren - größe 8G oder was man sich ausdenkt
+
+# It is possible to use a swap file on btrfs, but there are some considerations that need taking care of.
+# btrfs filesystem doesn't let to create snapshots if there is a working swap file on the subvolume. That means that it is highly recommended to place a swap file on a separate subvolume.
+# Let's assume that the current swap is already off, the / is on /dev/sda1 and Ubuntu is installed with / on @ subvolume and /home is on @home subvolume.
+#  Mount /dev/sda1 to /mnt.
+
+rootdevsrc=$(findmnt -nr -T / -osource)
+echo "Mount / ist gebunden auf $rootdevsrc"
+if [[ "$rootdevsrc" =~ \[/@]$ ]] 
+then
+   echo "Verwendung von btrfs subvol /@"
+else
+   echo "Hier stimmt was nicht. $rootdevsrc enthält kein btrfs-subvol oder subvol ist nicht '/@'"
+   exit 1
+fi
+
+rootdev=${rootdevsrc%\[/@]}
+
+echo "BTRFS-Device ist daher $rootdev"
+echo "OK - erzeuge jetzt (etwas umständlich) ein SubVol /@swap, in dem swapfile liegt"
+
+# zunächst nochmal mounten, damit die root-subvols sichtbar werden
+sudo mount $rootdev /mnt
+#    If you run ls /mnt, you'll see @, @home and other subvolumes that may be there.
+
+#   Create a new @swap subvolume.
+sudo btrfs sub create /mnt/@swap
+
+#    Unmount /dev/sda1 from /mnt.
+sudo umount /mnt
+
+#    Create /swap directory where we plan to mount the @swap subvolume.
+sudo mkdir /swap
+
+#    Mount the @swap subvolume to /swap.
+sudo mount -o subvol=@swap $rootdev /swap
+
+#    Create the swap file.
+sudo touch /swap/swapfile
+
+#    Set 600 permissions to the file.
+sudo chmod 600 /swap/swapfile
+
+#    Disable COW for this file.
+sudo chattr +C /swap/swapfile
+
+#    Set size of the swap file to 8G as an example.
+sudo dd if=/dev/zero of=/swap/swapfile bs=1M count=8192
+
+#    Format the swapfile.
+sudo mkswap /swap/swapfile
+
+#    Turn the swap file on.
+sudo swapon /swap/swapfile
+
+# Now the new swap should be working.
+#
+# You also need to update /etc/fstab to mount all this on boot. Add there two lines:
+echo "Update /etc/fstab mit uuid Spezifizierung"
+# uuid from Dev
+uuid=$(lsblk -n -o UUID $rootdev)
+sudo echo "UUID=$uuid /swap btrfs  defaults,subvol=@swap 0 0" >> /etc/fstab
+sudo echo "/swap/swapfile none swap sw 0 0" >> /etc/fstab
+
+# The UUID is the one of your /dev/sda1.
+echo "Fertig! Swap ist nun im Subvol @swap"
+sudo swapon
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