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Windows Vista Security: Praxisorientierte Sicherheit für Profis by Marcus Nasarek

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Chapter 23: Exploring the Windows Boot Environment
Installing a Previous Version of Windows on a Computer Running
Windows Vista
One scenario where Bootsect is particularly handy is when you are installing a previ-
ous version of Windows on a computer running Windows Vista. Normally, Win-
dows Vista won’t let you install and then run a previous version of Windows. You
can work around this issue using Bootsect and BCDedit.
To install a previous version of Windows onto a computer running Windows Vista,
follow these steps:
1. Insert the media for the previous version of Windows into your CD-ROM or
DVD-ROM drive.
2. Restart the computer and start Setup for the previous version of Windows.
3. Log on to the previous version of Windows and restore the Windows Vista boot
manager. You must specify the partition where Windows Vista is installed. If
Windows Vista was installed on C:, you’d use the following command:
bootsect /nt60 c:
4. Create a BCD entry for the pre-Windows Vista operating system you just
installed using BCDedit. BCDedit is located in the \Windows\System32 directory
of the Windows Vista partition. Type the following commands exactly as shown,
where
Windows_Version is the version of Windows you installed:
Bcdedit /create {legacy} /d "Windows_Version"
Bcdedit /set {legacy} device boot
Bcdedit /set {legacy} path \ntldr
Bcdedit /displayorder {legacy} /addlast
5. Restart the computer to apply the BCD changes.

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