Dell PowerEdge R900 - Manual (Page 51)

Using the System Setup Program 51
To erase a character when entering your password, press <Backspace> or
the left-arrow key.
NOTE: To escape from the field without assigning a system password, press
<Enter> to move to another field, or press <Esc> at any time prior to
completing step 5.
4 Press <Enter>.
5 To confirm your password, type it a second time and press <Enter>.
The setting shown for the System Password changes to Enabled. Exit
the System Setup program and begin using your system.
6 Either reboot your system now for your password protection to take effect
or continue working.
NOTE: Password protection does not take effect until you reboot the system.
Using Your System Password to Secure Your System
NOTE: If you have assigned a setup password (see "Using the Setup Password" on
page 53), the system accepts your setup password as an alternate system
password.
When the Password Status option is set to Unlocked, you have the option to
leave the password security enabled or to disable the password security. To
leave the password security enabled:
1 Turn on or reboot your system by pressing <Ctrl><Alt><Del>.
2 Type your password and press <Enter>.
To disable the password security:
1 Turn on or reboot your system by pressing <Ctrl><Alt><Del>.
2 Type your password and press <Ctrl><Enter>.
When the Password Status in BIOS Setup is set to Locked, and you turn on
or reboot your system, you will only be able to enter your system password
without the ability to disable it using <Ctrl><Enter>. You must enter BIOS
Setup and change the Password Status item to Unlocked to regain this
functionality.
After you type the correct system password and press <Enter>, your system
operates as usual.