  HD molecule is one the most abundant molecule in the Universe and due to its
sensibility to the conditions in the medium, it can be used to constrain
physical parameters in the medium where HD resides. Lately we have shown that
HD abundance can be enhanced in the low metallicity medium. Large and Small
Magellanic Clouds give us an opportunity to study low metallicity galaxies in
details towards different sightlines due to their proximity to our Galaxy. We
revisited FUSE space telescope archival spectra towards bright stars in
Magellanic Clouds to search for HD molecules, associated with the medium of
these galaxies. We reanalysed H$_2$ absorption lines and constrained HD column
density at the positions of H$_2$ components. We detected HD towards 24
sightlines (including 19 new detections). We try to measure cosmic ray
ionization rate for several systems using measured $N({\rm HD})/N({\rm H_2})$,
and in most cases get loose constraints due to insufficient quality of the FUSE
spectra.
