{"id":484,"date":"2010-11-07T18:58:08","date_gmt":"2010-11-07T17:58:08","guid":{"rendered":"http:\/\/olivier.hoarau.org\/?p=484"},"modified":"2010-11-07T18:58:08","modified_gmt":"2010-11-07T17:58:08","slug":"archivage-numerique-strategie-active","status":"publish","type":"post","link":"https:\/\/olivier.hoarau.org\/?p=484","title":{"rendered":"Archivage num\u00e9rique – strat\u00e9gie active"},"content":{"rendered":"

\u00c9tant donn\u00e9 que la dur\u00e9e de vie d’un CD-ROM ne d\u00e9passe gu\u00e8re une d\u00e9cennie (et que celle d’un DVD-ROM est encore plus faible), j’ai commenc\u00e9 \u00e0 redescendre l’ensemble de mes archives sur le disque dur de mon serveur. Cela concerne essentiellement mes photos et vid\u00e9os. Comme je m’y attendais, je n’arrive plus \u00e0 lire certains de mes CD-ROM alors que j’avais fait le n\u00e9cessaire pour les conserver dans de bonnes conditions. Pour r\u00e9cup\u00e9rer le disque, je me suis servi de l’outil ddrescue<\/strong> qu’on peut trouver sous forme de package dans votre distrib pr\u00e9f\u00e9r\u00e9e. Il suffit de taper la commande suivante<\/p>\n

ddresdcue -n -b 2048 \/dev\/sr0 \/marcel\/image.dd \/tmp\/dd.log<\/strong><\/p>\n

\/dev\/sr0<\/strong> est le fichier sp\u00e9cial du lecteur DVD, \/marcel\/image.dd<\/strong> l’image de destination, et \/tmp\/dd.log<\/strong> le fichier de log. Voil\u00e0 ce que \u00e7a donne \u00e0 l’ex\u00e9cution de la commande :<\/p>\n

Press Ctrl-C to interrupt
\nInitial status (read from logfile)
\nrescued:\u00a0\u00a0\u00a0 71688 kB,\u00a0 errsize:\u00a0\u00a0 7069 kB,\u00a0 errors:\u00a0\u00a0\u00a0\u00a0\u00a0 48
\nCurrent status
\nrescued:\u00a0\u00a0\u00a0 98850 kB,\u00a0 errsize:\u00a0\u00a0\u00a0 510 MB,\u00a0 current rate:\u00a0\u00a0\u00a0\u00a0 6144 B\/s
\nipos:\u00a0\u00a0\u00a0 27387 kB,\u00a0\u00a0 errors:\u00a0\u00a0\u00a0\u00a0 255,\u00a0\u00a0\u00a0 average rate:\u00a0\u00a0\u00a0 16225 B\/s
\nopos:\u00a0\u00a0\u00a0 27387 kB,\u00a0\u00a0\u00a0\u00a0 time from last successful read:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0 s
\nFinished<\/strong><\/p>\n

Maintenant on va monter l’image obtenue dans le r\u00e9pertoire \/media\/cdrom<\/strong><\/p>\n

mount -o loop \/marcel\/image.dd \/media\/cdrom\/<\/strong><\/p>\n

Il suffit d’aller r\u00e9cup\u00e9rer les fichiers dans \/media\/cdrom<\/strong>. Il se trouve qu’il n’a pas pu r\u00e9cup\u00e9rer les images jpeg (elles sont illisibles). Je me suis servi de photorec<\/strong> pour pouvoir les r\u00e9cup\u00e9rer. On trouve cet outil \u00e0 cette adresse http:\/\/www.cgsecurity.org\/wiki\/PhotoRec<\/a>. Avant de le compiler, il faudra installer le package libuuid-devel<\/strong>. Ensuite on d\u00e9compresse l’archive en tapant:<\/p>\n

tar xvfj testdisk-6.12-WIP.tar.bz2<\/strong><\/p>\n

Cela donne le r\u00e9pertoire testdisk-6.12-WIP<\/strong> dans lequel on tape<\/p>\n

.\/configure
\nmake<\/strong><\/p>\n

Puis en tant que root make install<\/strong>. Ensuite c’est tr\u00e8s simple en tant que root on tape<\/p>\n

photorec \/marcel\/image.dd<\/strong><\/p>\n

Il suffit de suivre les indications, les fichiers seront plac\u00e9s dans un r\u00e9pertoire de destination dans lequel il faudra ensuite faire le tri.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u00c9tant donn\u00e9 que la dur\u00e9e de vie d’un CD-ROM ne d\u00e9passe gu\u00e8re une d\u00e9cennie (et que celle d’un DVD-ROM est encore plus faible), j’ai commenc\u00e9 \u00e0 redescendre l’ensemble de mes archives sur le disque dur de mon serveur. Cela concerne essentiellement mes photos et vid\u00e9os. Comme je m’y attendais, je n’arrive plus \u00e0 lire certains … Continuer la lecture de Archivage num\u00e9rique – strat\u00e9gie active<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false,"_share_on_mastodon":"0"},"categories":[5],"tags":[],"class_list":["post-484","post","type-post","status-publish","format-standard","hentry","category-logiciels-libres"],"share_on_mastodon":{"url":"","error":""},"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/peOjJ-7O","jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=\/wp\/v2\/posts\/484","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=484"}],"version-history":[{"count":1,"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=\/wp\/v2\/posts\/484\/revisions"}],"predecessor-version":[{"id":485,"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=\/wp\/v2\/posts\/484\/revisions\/485"}],"wp:attachment":[{"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=484"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=484"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/olivier.hoarau.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=484"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}