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+This experimental guide has been made official at [[Debian Buster Root on ZFS]].
+
+If you have an existing system installed from the experimental guide, adjust your sources:
+
+    # vi /etc/apt/sources.list.d/buster-backports.list
+    deb http://deb.debian.org/debian buster-backports main contrib
+    deb-src http://deb.debian.org/debian buster-backports main contrib
+    
+    # vi /etc/apt/preferences.d/90_zfs
+    Package: libnvpair1linux libuutil1linux libzfs2linux libzpool2linux zfs-dkms zfs-initramfs zfs-test zfsutils-linux zfsutils-linux-dev zfs-zed
+    Pin: release n=buster-backports
+    Pin-Priority: 990
+
+This will allow you to upgrade from the locally-built packages to the official buster-backports packages.