{"id":7541,"date":"2026-06-26T07:33:57","date_gmt":"2026-06-26T05:33:57","guid":{"rendered":"https:\/\/entropie.org\/3615\/?p=7541"},"modified":"2026-06-26T08:14:05","modified_gmt":"2026-06-26T06:14:05","slug":"chiffrer-un-disque-externe-avec-debian","status":"publish","type":"post","link":"https:\/\/entropie.org\/3615\/index.php\/2026\/06\/26\/chiffrer-un-disque-externe-avec-debian\/","title":{"rendered":"Chiffrer un disque externe avec Debian"},"content":{"rendered":"<p>Attention, toutes les anciennes donn\u00e9es seront effac\u00e9es.<br \/>\nLe disque externe ne doit pour l\u2019instant pas \u00eatre mont\u00e9.<br \/>\nIdentifier le disque externe :<\/p>\n<pre>lsblk<\/pre>\n<p>Cela permet d\u2019identifier le bon p\u00e9riph\u00e9rique (\/dev\/sdb, \/dev\/sdc, etc.).<br \/>\nLe p\u00e9riph\u00e9rique identifi\u00e9 est \u00e0 utiliser ci-dessous.<br \/>\nChiffrement avec LUKS :<\/p>\n<pre>\r\nsudo cryptsetup luksFormat <span style=\"color:#00ff00;\">\/dev\/sdX<\/span>  <span style=\"color:#00ff00;\">(\u00e0 adapter)<\/span>\r\nsudo cryptsetup luksOpen <span style=\"color:#00ff00;\">\/dev\/sdX<\/span> disque_externe  <span style=\"color:#00ff00;\">(\u00e0 adapter)<\/span>\r\nsudo dd if=\/dev\/zero of=\/dev\/mapper\/disque_externe bs=64M status=progress\r\nsudo mkfs.ext4 \/dev\/mapper\/disque_externe\r\n<\/pre>\n<p>Apr\u00e8s avoir r\u00e9pondu YES, il sera demand\u00e9 une phrase secr\u00e8te qui sera la cl\u00e9 du chiffrement.<br \/>\nMonter le disque externe :<\/p>\n<pre>\r\nudisksctl mount -b \/dev\/mapper\/disque_externe\r\n<\/pre>\n<p>Pour r\u00e9cup\u00e9rer le point de montage du disque externe dans une variable :<\/p>\n<pre>\r\nMOUNT=$(findmnt \/dev\/mapper\/disque_externe -o TARGET -n)\r\necho \"$MOUNT\"\r\n<\/pre>\n<p>Le conteneur LUKS ne g\u00e8re que le chiffrement. Une fois d\u00e9verrouill\u00e9, le syst\u00e8me de fichiers \u00e0 l&rsquo;int\u00e9rieur conserve ses propri\u00e9taires et permissions. Pour voir le propri\u00e9taire (et le groupe) actuel :<\/p>\n<pre>\r\nls -ld \"$MOUNT\"\r\n<\/pre>\n<p>On modifie le propri\u00e9taire (et le groupe) du syst\u00e8me de fichiers mont\u00e9 :<\/p>\n<pre>\r\nsudo chown -R $USER:$USER \"$MOUNT\"\r\nls -ld \"$MOUNT\"\r\n<\/pre>\n<p>D\u00e9monter le disque externe :<\/p>\n<pre>\r\nudisksctl unmount -b \/dev\/mapper\/disque_externe\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Attention, toutes les anciennes donn\u00e9es seront effac\u00e9es. Le disque externe ne doit pour l\u2019instant pas \u00eatre mont\u00e9. Identifier le disque externe : lsblk Cela permet d\u2019identifier le bon p\u00e9riph\u00e9rique (\/dev\/sdb, \/dev\/sdc, etc.). Le p\u00e9riph\u00e9rique identifi\u00e9 est \u00e0 utiliser ci-dessous. Chiffrement avec LUKS : sudo cryptsetup luksFormat \/dev\/sdX (\u00e0 adapter) sudo cryptsetup luksOpen \/dev\/sdX disque_externe (\u00e0 &hellip; <a href=\"https:\/\/entropie.org\/3615\/index.php\/2026\/06\/26\/chiffrer-un-disque-externe-avec-debian\/\" class=\"more-link\">Continuer la lecture<span class=\"screen-reader-text\"> de &laquo;&nbsp;Chiffrer un disque externe avec Debian&nbsp;&raquo;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,28,5],"tags":[],"class_list":["post-7541","post","type-post","status-publish","format-standard","hentry","category-debian","category-installation","category-tutoriels"],"_links":{"self":[{"href":"https:\/\/entropie.org\/3615\/index.php\/wp-json\/wp\/v2\/posts\/7541"}],"collection":[{"href":"https:\/\/entropie.org\/3615\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/entropie.org\/3615\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/entropie.org\/3615\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/entropie.org\/3615\/index.php\/wp-json\/wp\/v2\/comments?post=7541"}],"version-history":[{"count":13,"href":"https:\/\/entropie.org\/3615\/index.php\/wp-json\/wp\/v2\/posts\/7541\/revisions"}],"predecessor-version":[{"id":7554,"href":"https:\/\/entropie.org\/3615\/index.php\/wp-json\/wp\/v2\/posts\/7541\/revisions\/7554"}],"wp:attachment":[{"href":"https:\/\/entropie.org\/3615\/index.php\/wp-json\/wp\/v2\/media?parent=7541"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/entropie.org\/3615\/index.php\/wp-json\/wp\/v2\/categories?post=7541"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/entropie.org\/3615\/index.php\/wp-json\/wp\/v2\/tags?post=7541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}