Q. I'm trying to change the root password, but it always fails with this error:
"passwd: Authentication failure"
A. There's a known issue in a version of Linux we used to ship which causes it. You can work around it like this:
1. Open the /etc/shadow file in vi
# vi /etc/shadow
2. Delete root's password by removing the encrypted password string, between two colons. For example, I made the change here by changing this:
3. Save the changes from within vi:
4. Use the passwd command to create your new password: