How to change ESX host root password

1. Shutdown and Reboot your VMware ESX Server

If you don’t know the VMware ESX Server root password, you don’t know any passwords for root-equivalent accounts, and your virtual center server also does not have it cached, the only way to change the root user password is to first shutdown / power off your VMware ESX Server.

2. Press “a” to modify the kernel arguments

As soon as you see the GRUB boot screen, press “a” to modify the kernel arguments, like this:

3. Enter single user mode

At the end of the kernel arguments command line, type “single” and press Enter, like this:

  4. Change the root password

Now, change the root password using the passwd command, like this:

You will need to enter the new root password twice.

 

5. Reboot the ESX Server

Once you have reset the root password, reboot the server to go back into multi-user mode.

6. Verify the new password

Once the system reboots, verify that the new root password works 🙂

 

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