NEC Express5800/R120b-2 User Manual page 531

NOTE:
The following box appears during the update if you have
deployed a full installation of Windows Server 2003.
Wait until the update completes.
5.
When the following message appears, "Updating the System" was finished.
When you apply Service Pack: Click [Yes], and then go to Step 6.
When you don't apply Service Pack: Click [No], and then go to Step 8.
6.
When the following message appears, click [Yes].
Installing Windows Server 2003 G-17