Login to the shelf manager as root
sentry login: root
Password:(there is no default password, leave blank)
Use the Linux to set the password using the passwd command
# passwd
Changing password for root
Enter the new password (minimum of 5, maximum of 8 characters)
Please use a combination of upper and lower case letters and numbers.
Enter new password:
Re-enter new password:
Password changed.
#
# exit (exits out of Linux)