Datasheet

Chapter 1
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Installing Windows 7
16
Upgrade Considerations
Almost all Windows Vista applications should run with the Windows 7
operating system. However, there are a few possible exceptions to this
statement:
Applications that use file system filters, such as antivirus software,
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may not be compatible.
Custom power-management tools may not be supported.
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Before you upgrade to Windows 7, be sure to stop any antivirus scan-
ners, network services, or other client software. These software pack-
ages may see the Windows 7 install as a virus and cause installation
issues.
If you’re performing a clean install to the same partition as an
existing edition of Windows, the contents of the existing Users (or
Documents and Settings), Program Files, and Windows directories will
be placed in a directory named Windows.old, and the old operating sys-
tem will no longer be available.
Hardware Compatibility Issues
Ensure that you have Windows 7 device drivers for your hardware.
If you have a video driver without a Windows 7–compatible driver,
the Windows 7 upgrade will install the Standard VGA driver, which
will display the video with an 800×600 resolution. After you get the
Windows 7 driver for your video, you can install it and adjust video
properties accordingly.
Application Compatibility Issues
Not all applications that were written for earlier editions of Windows
will work with Windows 7. After the upgrade, if you have application
problems, you can address the problems as follows:
If the application is compatible with Windows 7, reinstall the
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application after the upgrade is complete.
If the application uses dynamic link libraries (DLLs) and there are
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migration DLLs for the application, apply the migration DLLs.
Use the Microsoft Application Compatibility Toolkit (ACT) to
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determine the compatibility of your current applications with
Windows 7. ACT will determine which applications are installed,
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