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Base on Red hat 6.2 manual, there is no /mnt/sysimage in rescue mode.<br />
Please check the following manual:<br />
<a href="http://www.redhat.com/docs/manuals/linux/RHL-6.2-Manual/ref-guide/s1-sysadmin-rescue.html" rel="ugc nofollow">http://www.redhat.com/docs/manuals/linux/RHL-6.2-Manual/ref-guide/s1-sysadmin-rescue.html</a><br />
<br />
to mount your &quot;/&quot; directory to somewhere like <br />
# mkdir /tmp/root<br />
# mount -t ext2 /dev/hda5 /tmp/root &nbsp;&lt;=== assume /dev/hda5 is your &quot;/&quot;)
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Base on Red hat 6.2 manual, there is no /mnt/sysimage in rescue mode.
Please check the following manual:
http://www.redhat.com/docs/manuals/linux/RHL-6.2-Manual/ref-guide/s1-sysadmin-rescue.html [http://www.redhat.com/docs/manuals/linux/RHL-6.2-Manual/ref-guide/s1-sysadmin-rescue.html]

to mount your "/" directory to somewhere like
# mkdir /tmp/root
# mount -t ext2 /dev/hda5 /tmp/root  <=== assume /dev/hda5 is your "/")

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thanks,I have already done that but when i give command to change the password<br />
then it doesnot accept it.even i can not able to open vi editor to change the password<br />
files.Plz tell how to change the password .
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thanks,I have already done that but when i give command to change the password
then it doesnot accept it.even i can not able to open vi editor to change the password
files.Plz tell how to change the password .

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<div class="content wysiwyg-content">
I have forget the redhat6.2 passsword,now i go to rescue mode and type command<br />
chroot /mnt/sysimage but it is showing me error....<br />
cannot change root directory to /mnt/sysimage:No such file or directory<br />
Plz help me to change the root password.<br />
<br />
Manish 
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I have forget the redhat6.2 passsword,now i go to rescue mode and type command
chroot /mnt/sysimage but it is showing me error....
cannot change root directory to /mnt/sysimage:No such file or directory
Plz help me to change the root password.

Manish 

cannot change root directory to /mnt/sysimage in Rescue mode

Operating system security (OS security) is the process of ensuring OS integrity, confidentiality and availability. OS security refers to specified steps or measures used to protect the OS from threats, viruses, worms, malware or remote hacker intrusions. OS security encompasses all preventive-control techniques, which safeguard any computer assets capable of being stolen, edited or deleted if OS security is compromised, including authentication, passwords and threats to systems and programs.

OS Security

The Linux operating system, in all its flavors, has its own share of security flaws that allow intrusions, but there are various mechanisms by which these flaws can be removed, generally divided into two parts: authentication and access control. Authentication is responsible for ensuring that a user requesting access to the system is really the user with the account, while access control is responsible for controlling which resources each account has access to and what kind of access is permitted.