Upgrading from Windows XP to Windows 7 (step 3)

Step 3: Installing Windows 7

When you choose the Custom option during installation, you install a new copy of Windows on your PC.

The options for Windows 7 installation

Note

Formatting your hard disk during Windows 7 installation isn’t necessary. If you want to format your hard disk, and you’re using an upgrade version of Windows 7, don’t use a program from another software manufacturer to reformat your hard disk prior to installing Windows 7. Instead, start your PC using the Windows 7 upgrade DVD, click Custom (advanced), and then click Drive options (advanced).

Before you begin

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  Connect your PC to the Internet so you can get installation updates during the installation process. (If you don’t have an Internet connection, you can still install Windows 7.)
  
  
  
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  Update your antivirus program, run it, and then turn it off. After you install Windows 7, remember to turn the antivirus program back on, or install new antivirus software that works with Windows 7.
  
  
  
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  Select either the 32-bit or 64-bit Windows 7 installation disc, depending on whether you want to install the 32-bit or 64-bit version of Windows 7. For more information, see 32-bit and 64-bit Windows: frequently asked questions.
  
  
  
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  Find your 25-character Windows product key. You can find it on the installation disc holder inside the Windows package—or in a confirmation e‑mail if you purchased and downloaded Windows 7 online.
  
  
  

Perform a Custom installation of Windows 7

1. 
   
   With your computer on and Windows XP running, do one of the following:
   
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     If you have a Windows 7 installation disc, insert the disc into your computer. Setup should start automatically. If it doesn't, click Start, click My Computer, open the Windows 7 installation disc on your DVD drive, and then double-click setup.exe.
     
     
     
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     If you purchased and downloaded Windows 7 online, open the installation file. Purchasing and downloading Windows 7 online is the easiest way to install Windows 7 on a netbook. For more information, see Installing Windows 7 on a netbook.
     
     
     
   
   
2. 
   
   On the Install Windows page, click Install now.
   
   
   
3. 
   
   On the Get important updates for installation page, we recommend getting the latest updates to help ensure a successful installation, and to help protect your computer against security threats. Your computer will need to be connected to the Internet during Windows 7 installation to get these updates.
   
   
   
4. 
   
   On the Please read the license terms page, if you accept the license terms, click I accept the license terms, and then click Next.
   
   
   
5. 
   
   On the Which type of installation do you want? page, click Custom.
   
   
   
6. 
   
   Choose the partition containing Windows XP (this is often the computer's C: drive), and then click Next. (Do not select your external USB hard drive.)
   
   
   
7. 
   
   In the Windows.old dialog box, click OK.
   
   
   
8. 
   
   Continue to follow the instructions to finish installing Windows 7, including naming your computer and setting up an initial user account. You can use the same names that you used in Windows XP, or choose new ones.
   
   
   
   
   
   source : www.microsoft.com