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This soft copy for use by IBM employees only.
Windows NT Server Setup
=========================
Setup has found Windows NT on your hard disk in the directory
shown below.
C:\WINNT ″Windows NT Server Version 4.00″
Setup recommends upgrading this windows NT installation to
Microsoft Windows NT Version 4.0. Upgrading will preserve
user account and security information, user preferences,
and other configuration information.
. To upgrade Windows NT in the directory shown above,
press Enter.
. To cancel upgrade and install a fresh copy of Windows NT,
press N.
F3=Exit ENTER=Upgrade N=New Version
Figure 125. Previous Version of Windows NT Detected
Press N to install Windows NT from scratch. You will then be asked to select the
type of computer (that is, select the HAL) as per Figure 64 on page 90. Ensure
you select the correct multiprocessor HAL as per Table 4 on page 91.
The installation process as described in Chapter 5, “Installing Windows NT
Server 4.0” on page 81 continues, although some steps will be skipped as part
of the upgrade process.
Note
After the installation process has completed, make sure that you reload any
service packs that had been installed prior to starting this procedure, and
recreate your emergency repair disk.
E.2.1 Using the Backup Domain Controller
If the server whose HAL you wish to upgrade is the Primary Domain Controller
(PDC), you can use your Backup Domain Controller (BDC) to take on the
functions of the PDC while you reinstall. If you do not have a BDC, you will need
to obtain a machine that has sufficient memory, disk and CPU capacity to act as
the PDC. Install NT 4.0 on that server and set it as the BDC.
Backup
We recommend that you back up your system before proceeding, including
the registry (backing up the registry is not the default). Promoting the BDC to
PDC will maintain the user security database (that is, all user accounts,
passwords and rights), but nothing else.
Now, promote the BDC to be the PDC. From the BDC, click on Start →
Programs → Administrative Tools → Server Manager to start the Server
Manager. From Server Manager, select the BDC (if it isn′t already selected).
Then from the pull-down menu bar, select Computer then Promote to Primary
Appendix E. The Hardware Abstraction Layer (HAL) 161