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Howtos - Resetting a lost Root Password[edit] Overview
If your ClarkConnect system is no longer accessible since the root password has been lost, you can follow the following steps to reset the root password and regain access to the operating system. This may be necessary if:
- your server has been compromised or hacked
- your client has changed the password and forgotten it
- your IT personnell have changed and did not leave you the password
- the password has been mislaid
For security reasons this procedure cannot be carried out remotely. It must be done from the console while physically at the server.
[edit] Booting into single-user mode
In single-user mode, your computer boots to runlevel 1. Your local file systems are mounted, but your network is not activated. You have a usable system maintenance shell.
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Warning! |
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Do not use single-user mode if your file system cannot be mounted successfully. You cannot use single-user mode if the runlevel 1 configuration on your system is corrupted.
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Use the following steps to boot into single-user mode:
- At the GRUB splash screen at boot time, press any key to enter the GRUB interactive menu.
- Select ClarkConnect Home/Office/Professional Edition with the version of the kernel that you wish to boot and type a to modify the kernel arguments before booting.
- Make sure that the cursor is at the end of the line and press the [Spacebar] and then type single. Press [Enter] to exit edit mode and begin booting up your system.
- Once the operating system has loaded you will be at a prompt similar to the following:
>sh-3.00#
- Type the command passwd and press [Enter]. You will see the following:
Changing password for user root
New UNIX password:
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Make sure that you set a strong password - i.e. it should not be based solely on a dictionary word and should contain numbers or other valid non-alpha characters. |
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- You will then be asked to re-enter the password to confirm it and will subsequently receive a confirmation that the root password has been reset.
- Now type in the command reboot and press [Enter] to restart your ClarkConnect system.
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