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When you try to start a Windows Vista or Windows Server 2008-based computer after installing a Windows Service Pack and subsequently uninstalling NetGear Storage Central or Zetera Z-SAN software, you receive the following stop error message:
This problem may occur under the following conditions:
You have the NetGear Storage Central software, including the Zetera Z-SAN drivers, installed on a computer running Windows Vista or Windows Server 2008.
You perform either an in-place-upgrade of your existing Windows Vista or Windows Server 2008 operating system, or install a Windows Vista or Windows Server 2008 Service Pack.
You uninstall the NetGear Storage Central software or the Zetera Z-SAN drivers.
You restart Windows.
Under these conditions, the registry entries to load the Zetera ZetSFD.sys filter driver may be migrated from the Disk Class registry subkey to the registry subkeys for specific Disk Class devices by the Windows Vista or Windows Server 2008 setup program. When the Zetera software is subsequently uninstalled, the driver files themselves are deleted, but the registry entries to load the Zetera ZetSFD.sys filter driver are not removed from the registry by the Zetera setup/uninstall program. As a result, when Windows restarts, the system attempts to load these filter drivers that are no longer present on the system. If this failure to load required drivers occurs for the disk device on which Windows is installed, Windows will be unable to access the disk, and thus unable to continue starting.
To allow the NetGear Storage Central or Zetera Z-SAN software to be safely uninstalled after installing a Windows Service Pack or performing an in-place upgrade installation of Windows Vista or Windows Server 2008, perform the following actions:
Before installing any Windows Service Pack or performing an in-place upgrade installation of Windows Vista or Windows Server 2008, uninstall the NetGear Storage Central and/or Zetera Z-SAN software.
Install the desired Windows Service Pack or perform the desired in-place upgrade installation of Windows Vista or Windows Server 2008.
Once the Windows or Service Pack installation is complete, reinstall the NetGear Storage Central and/or Zetera Z-SAN software.
If you have already installed a Windows Service Pack or performed an in-place upgrade installation of Windows Vista or Windows Server 2008, you may safely uninstall the NetGear Storage Central and/or Zetera Z-SAN software by performing the following actions:
This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
Click Start, type regedit in the Start Search box, and then click regedit in the Programs list. If you are prompted for an administrator password or for a confirmation, type the password, or click Continue.
In the navigation pane, locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum
In the Edit menu for Registry Editor, click Find..., enter ZetSFD, and click Find Next.
If this search finds an occurrence of "ZetSFD" in an LowerFilters registry value, edit the LowerFilters value to remove the "ZetSFD" entry: - If "ZetSFD" is the only entry in the LowerFilters registry value, right-click LowerFilters, and then click Delete. - If "ZetSFD" is not the only entry in the LowerFilters registry value, double-click LowerFilters, delete the "ZetSFD" line (leaving the remaining entries), and then click OK.
Click Yes when you are prompted.
Exit Registry Editor.
Restart the computer.
Uninistall the NetGear Storage Central and/or Zetera Z-SAN software.
For information on similiar issues, see the following articles in the Microsoft Knowledge Base:
940267 You receive an error message if you try to install a USB device on a Windows Vista-based computer that was upgraded from Windows XP
For information on Windows Vista Setup Filter Driver Migration behavior, see the following articles in the Microsoft Knowledge Base:
976267 Filter Driver Registry Entries Are Migrated During Windows Vista or Windows Server 2008 Upgrade or Service Pack Setup
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