We aquired a new client some time ago, and they already had in place an ESXi 5.1 host running only one virtual server 2008 R2 VM. The problem is, we do not have the root password to access the host. We have no way of managing this host or VM since we can not log in to it via console or vsphere client. The company also does not have the password and has no way of retrieving it.
How can we go about gaining access to this host? I know there is no way to simply reset the root password, but I'm trying to figure out our options. I was wondering if we upgraded from 5.1 to 5.5 if we would be given the option to change the root password, but I'm not sure if this is even possible without being able to log in to the host first. I have Google'd around and not found a solution so I'm hoping someone here may have an idea? Thanks in advance.