When attempting to upgrade from an existing Windows NT 4.0 Server installation to Windows 2000 Server the following message is received error message " 4M Raid Controller driver is not compatable". The following steps must be taken to attaempt the re-upgrade to 2000 Server.

This error happens because the server was installed using the "automated" install of Windows NT included in the NetServer Navigator CD. The automated install of OS the Navigator CD creates, will install drivers for all compatible HP controllers, including the NetRAID 4M, even if those controllers aren't present in the system. Since the Navigator has now left a signiture for Windows about this hardware,  the Windows 2000 Install attempts to load compatible drivers to upgrade to Windows 2000. Since no Windows 2000 drivers are present the error message is generated.

To upgrade your system to Windows2000, run w2ksetup.bat first.
It is located on the Windows 2000 drivers diskette of your server (probably in the folder a:\netraid4m). If you do not have the updated drivers diskette , go to http://h20000.www2.hp.com/bizsupport/TechSupport/Product.jsp?locale=en_US&prodTypeId=15351&prodCatId=79378&prodSubCatId=71341 and select you product.

Then follow these steps:

1.       Uninstall or Disable any services related to the 4M (they usually start with HPN)

a.      Hpnport

b.      Hpndisk

c.       Hpnscsi

d.      Hpncon

2.       Uninstall the NetRAID 4M driver in the SCSI adapters tool in the Control Panel.

3.       Reboot & Restart the upgrade again.

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