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5 (https://memo-linux.com/ubuntu-server-perte-mot-de-passe-root/#comments)Ubuntu serveur: Pertemot de passe rootPosted on 26/08/2013(https://memo-linux.com/ubuntu-server-perte-mot-de-passe-root/)by fred (https://memo-linux.com/author/fred/)
Mise jour de larticle!
voici une astuce qui permet de redfinir le mot de passe perdu pour le compte root.
Ancienne mthode
(date du 29/06/2011)
A linvite de grub (dbut du dmarrage linux) appuyer sur la touche e
Slectionner la deuxime ligne commenant par kernel /vmlinuz-2.6. et appuyer sur la touche e
remplacer ro splash quiet par rw init=/bin/bash puis appuyer sur entrer (attention le clavier est en QWERTY )
Appuyez sur la touche b afin de booter em mode single user
A linvite de commande vous pouvez changer le mot de passe root avec la commande passwd
Mthode partir dUbuntu 12.04Lts
Au menu du Grub: choisir Mode de dpanage
(https://memo-linux.com/wp-content/uploads/2011/06/ubuntu-root-mdp.png)
Au menu de rcupration, choisir: root
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rpondre (ht tps: / /memo-l inux.com/ubuntu-server-perte-mot-de-passe-root/?replytocom=8373#respond)
(https://memo-linux.com/wp-content/uploads/2011/06/ubuntu-root-mdp2.png)
Une fois arriver au shell, saisir les commandes suivantes:
Remonter la partition en lecture et criture:
Changement du mot de passe root:
En image:
(https://memo-linux.com/wp-content/uploads/2011/06/ubuntu-root-mdp3.png)
A ce stade, si le compte root na pas t dfinie il est aussi possible dajouter un utilisateur:
Une fois le mot de passe redfinie, reboot de la machine:
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fred
Autodidacte, technicien informatique systme et rseau. Utilisateur au quotidien de GNU/Linux. Guitariste (ternel apprenti)
Punk'Hard'Blues'n'Rollet me dplace tous les jours avec mon fidle destrier : ZRX1100 (https://memo-linux.com/kawasaki-1100-zrx/).
5 comments
08/09/2014 (https://memo-linux.com/ubuntu-server-perte-mot-de-passe-
root/comment-page-1/#comment-8373)
swaegers
fonctionne la seule condition quil ny ai pas un mot de passe pour le dmarrage du BIOS
mountrw o remount /
passwdroot
adduser fred
reboot
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rpondre (ht tps: / /memo-l inux.com/ubuntu-server-perte-mot-de-passe-root/?replytocom=21651#respond)
rpondre (ht tps: / /memo-l inux.com/ubuntu-server-perte-mot-de-passe-root/?replytocom=21681#respond)
rpondre (ht tps: / /memo-l inux.com/ubuntu-server-perte-mot-de-passe-root/?replytocom=37362#respond)
rpondre (ht tps: / /memo-l inux.com/ubuntu-server-perte-mot-de-passe-root/?replytocom=46730#respond)
28/02/2015 (https://memo-linux.com/ubuntu-server-perte-mot-de-passe-
root/comment-page-1/#comment-21651)
nicolas sourdet (http://memo-linux.com)
bonjour j ai un probleme de mot de passe root avec linux mais le probleme c est que l invit de grub n est pas pareil que vous comment faire merci??
28/02/2015 (https://memo-linux.com/ubuntu-server-perte-mot-de-passe-
root/comment-page-1/#comment-21681)
fred (http://memo-linux.com)
Bonjour Nicolas,
as-tu un un screenshot de ton bios et quel est sa version ?
27/05/2015 (https://memo-linux.com/ubuntu-server-perte-mot-de-passe-
root/comment-page-1/#comment-37362)
elie
je possde ubuntu 12.04. jai excut ceci plusieurs fois. A chaque fois a ne reconnat pas le mot de passe entr. Que faire?
20/08/2015 (https://memo-linux.com/ubuntu-server-perte-mot-de-passe-
root/comment-page-1/#comment-46730)
otman
Bonjour,
Je fais la mme manip mais quand je choisis Root, jarrive sur une demande dentrer un mot de passe Root ou de faire ctrl D pour continuer. Je narrive pas pas au shell. Merci
de votre aide
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