+This feature is requiring that the Desktop Environment supports the
+http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html[XDG
+specification].
+
+[[S_disk]]
+How to monitor the temperature of a disk with +hddtemp+?
+--------------------------------------------------------
+
+Until the release 1.1.2, Psensor is using +hddtemp+ by default to
+retrieve the temperature of the disks.
+
+If +hddtemp+ is installed but no disk temperature is reported, check
+that the daemon is running by using for example the command +ps
+-eaf|grep hddtemp+.
+It should output something like:
+
+---------------------
+root 1433 1 0 May28 ? 00:00:21 /usr/sbin/hddtemp -d -l 127.0.0.1 -p 7634 -s | /dev/sdb
+---------------------
+
+Depending on the Linux distribution, the installation of the +hddtemp+
+package does not enable the hddtemp daemon automaticaly.
+
+In this case, edit the file +/etc/default/hddtemp+ and set
++RUN_DAEMON+ to +"true"+. After edition, it should contain the
+following line:
+
+------------------
+RUN_DAEMON="true"
+------------------
+
+For Debian/Ubuntu, you can use at root:
+------------------
+dpkg-reconfigure hddtemp
+------------------
+
+and reply +yes+ when asked whether hddtemp daemon must be
+run during the startup.
+