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Windows 7 Upgrade Paths
Windows 7 Availability Schedule
Microsoft has a Word document you can download on the subject, but I thought I would post the contents here, as why would anyone want to waste time downloading for such a short content piece, so here it is. Subject to change per MS.
Windows 7 Upgrade Paths
This document outlines supported and unsupported upgrade paths for editions of the Windows® 7 operating system.
Unsupported Upgrade Scenarios
· Upgrades to Windows 7 from the following operating systems are not supported:
· Windows 95, Windows 98, Windows Millennium Edition, Windows XP, Windows Vista® RTM, Windows Vista Starter, Windows 7 M3, Windows 7 Beta, Windows 7 RC, or Windows 7 IDS
· Windows NT® Server 4.0, Windows 2000 Server, Windows Server® 2003, Windows Server 2008, or Windows Server 2008 R2
· Cross-architecture in-place upgrades (for example, x86 to x64) are not supported.
· Cross-language in-place upgrades (for example, en-us to de-de) are not supported.
· Cross-SKU upgrades (for example, Windows 7 N to Windows 7 K) are not supported.
· Upgrades from Windows Vista to Windows N, Windows K, Windows KN, or Windows E are not supported.
· Cross-build type in-place upgrades (for example, fre to chk) are not supported.
· Pre-release in-place upgrades across milestones (for example, Windows 7 RC to Windows 7 RTM) are not supported.
Supported Upgrade Scenarios
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From Windows Vista (SP1, SP2)
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Upgrade to Windows 7
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Business
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Professional, Enterprise, Ultimate
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Enterprise
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Enterprise
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Home Basic
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Home Basic, Home Premium, Ultimate
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Home Premium
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Home Premium, Ultimate
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Ultimate
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Ultimate
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From Windows 7
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Upgrade to Windows 7
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Enterprise
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Enterprise
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Home Basic
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Home Basic
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Home Premium
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Home Premium
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Professional
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Professional
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Starter (x86 only)
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Starter (x86)
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Ultimate
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Ultimate
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From Windows 7
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Anytime Upgrade to Windows 7
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Home Basic
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Home Premium, Professional, Ultimate
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Home Premium
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Professional, Ultimate
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Professional
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Ultimate
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Starter
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Home Premium, Professional, Ultimate
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