FC 11 Boot mode single user [recovery password]

Suvayu Ali fatkasuvayu+linux at gmail.com
Tue Aug 11 01:06:26 UTC 2009


Phil Meyer wrote:
> On 08/10/2009 04:39 PM, suvayu ali wrote:
>> 2009/8/10 Jerry Feldman<gaf at blu.org>:
>>   
>>> On 08/10/2009 09:01 AM, Tiago Araujo wrote:
>>>     
>>>> Dear,
>>>>
>>>> I need recovery password in FC 11.
>>>>
>>>>
>>>>        
>>> There is none. The best way to recover a lost root password is to boot
>>> the installation media, the root file system should be mounted on
>>> /mnt/sysimage, but if it is not, you can mount it by hand.
>>>
>>> The use the chroot(8) command  to set /mnt/sysimage as your root, then
>>> use the passwd(1) command to change the password, then to be safe,
>>> unmount /mnt/sysimage.
>>>
>>> Example:
>>> (if the root file system is not mounted: mount /dev/sda2 /mnt/sysimage
>>> (assuming this is where root is) )
>>> chroot /mnt/sysimage
>>> passwd
>>> -->you will be prompted
>>> umount /mnt/sysimage
>>>
>>> The reboot. The umount is very important.
>>>      
>>
>> Just for knowledge's sake, why is the umount so important?
>>
>>    
> 
> A umount will force a flush of the file system's buffers, thus making 
> sure that your changes are saved.
> 
> If you exit gracefully from single user, this should happen as a matter 
> of course, but not everyone will exit gracefully from single user or 
> rescue mode.
> 
> Plus, you may want to do more than one thing in recovery mode, and this 
> step reminds you to 'save your work'.
> 

Thank you. I get to learn everyday on this list!  :)

-- 
Suvayu

Open source is the future. It sets us free.




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