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Re: how to change root passwd (if forgotten)

if i'm not mistaken you can just go to single user mode on centos by appending "1" or "single" (without quotes) on boot parameter, no need for any live cd

2011/8/10 abdelkader belahcene <abelahcene@gmail.com>
I ve forgotten my root passwd on centos 6 (red hat based),

I tried to change it as I used in debian (in debian it works perfectly) ,  that is:

use a cd live (or installation cd1), to access the hd,
I mount  my root partition and mount proc and devices

I tried  the command passwd, no error reprorted, but after reboot the passwd had´t changed.
then I decided to remove passwd from /etc/shadow (delete the
second field).

OK,  now I can access my machine  without passwd,  BUT I CAN´T GIVE ANY PASSWORD!!!!  I RECEIVE THIS ERROR

# passwd

Changing password for user root.
New password:
Retype new password:
passwd: Authentication token manipulation error

any idea to fix the problem.
thanks a lot


Umarzuki Mochlis

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