http://doc.ubuntu-fr.org/ssd_solid_state_drive#caracteristiques_essentielles_d_un_ssd
http://ubuntuforums.org/showthread.php?t=1309253
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http://karuppuswamy.com/wordpress/2014/06/26/everything-you-need-to-know-about-ssd-support-in-ubuntu-14-04/