Windows 7 has RTMed & will be available through various sources starting from August 6th, not to mention that the particular build 7600.16385.090713-1255 has been available on torrents for quite some time. If you’re already on a RC (or later) build or are planning to upgrade from Vista, here are some pointers & links that might be helpful. If you’re running Windows Vista Home Premium or Windows Business you’re good to go. Windows 7 will definitely perform better on your machine than Vista.

If you’re uncertain about your PC hardware capabilities for Windows 7, then use Microsoft Windows 7 Upgrade Advisor.

Windows XP to Windows 7 is NOT supported, use Windows Easy Transfer.

You’ll need to do a clean install. However, you can use Windows Easy Transfer to move your files.For XP it needs to be downloaded, Windows 7 has the Easy Transfer wizard built-in.

Window Vista to Windows 7:

From To
Windows  Vista RTM Windows 7
Windows Vista (SP1 or SP2) Windows 7
Windows Vista 32 bit (SP1 or SP2) Windows 7 64 bit (Clean Install)
Windows Vista 64 bit (SP1 or SP2) Windows 7 32 bit (Clean Install)
Windows Vista Business (SP1 or SP2) Windows 7 Home Premium (Clean Install)
Windows Vista Ultimate Any SKU other than Ultimate/Enterprise (Clean Install)


If you’re upgrading to Windows 7 from a Vista edition that is lower in hierarchy you’ll need to do a fresh install. In all such cases make use of Windows Easy Transfer.

If you’re upgrading from Windows 7 RC to Windows 7 RTM, you’ll probably need to edit a setup file.

  • Windows Vista SP1, SP2 to Windows 7 upgrades supported:

Upgrade path from Windows Vista to Windows 7

  • Windows 7 Anytime Upgrade supported:

Windows 7 Anytime upgrade

To Install Using USB Drives:

To make a bootable Windows 7 install USB drive (from ISO), I’d suggest you use this tool:

Windows 7 boot using USB Cop ISO to DVD or USB

UPDATE: The tool is currently offline as of 10th November 1:30 PM (GMT +5.30) due to code licensing violations that surfaced.

To install Windows 7 on 4GB drives: You’ll need to use something like vlite to disable installation of features in Windows 7, create the ISO & use the tool above to make a bootable USB drive. Here’s an article on vlite. Here is an image from Ed Bott that shows the approximate amount of hard disk space taken by the various Windows 7 SKUs:

Windows 7 Required Disc Space

Some links that you can read: