recovering-root-passwd &laquo; WordPress.com Tag Feed http://en.wordpress.com/tag/recovering-root-passwd/ Feed of posts on WordPress.com tagged "recovering-root-passwd" Sun, 26 May 2013 00:51:01 +0000 http://en.wordpress.com/tags/ en <![CDATA[passwd authentication token manipulation error]]> http://linuxindetails.wordpress.com/2012/04/16/passwd-authentication-token-manipulation-error/ Mon, 16 Apr 2012 16:06:34 +0000 linuxindetails http://linuxindetails.wordpress.com/2012/04/16/passwd-authentication-token-manipulation-error/ If you try to reinitialize the root passwd of your Linux installation through a recovering boot with init=/bin/sh, you may have  the following error message :

passwd: Authentication token manipulation error

First check if your / filesystem is mounted read-write or read-only. Restart your machine and at the Grub prompt (tested on a fresh install of RHEL 6.2 with Grub version of 0.97), change ro to rw as indicated below :

kernel /vmlinuz-2.6.32-220.el6-x86_64 ro root=/dev/mapper….

kernel /vmlinuz-2.6.32-220.el6-x86_64 rw root=/dev/mapper….

 

An other solution is to make sure that the content of /etc/passwd and /etc/shadow are  the same with the pwconv command.

As root, before reinitializing again its passwd, run the command below :

root@localhost:~# pwconv

Then

root@localhost~# passwd

You should have no more error message.

 

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