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Ex employee logged into to box and changed the root password, trued to start in single user mode, but not coming right
* Loaded up grub
* Typed the following in Boot Options:
* Takes me to a prompt where I then enter the command "passwd"
* Returns with a "command could not be found" output
Tried changing the directories to /usr/bin and /sbin but didn't work either, any ideas?
Not sure what you mean by "not coming right", but instead of going through Grub, boot from your CD/DVD media. Go into "Rescue" mode. From there, you'll be able to mount the hard drive. You can try to run the "passwd" command from there (you'll be in as root at that point), or you can manually edit the /etc/shadow file, and remove the password for root.
And alternative is to find said ex-employee, and threaten them with bodily harm, until they tell you the password.