[Windows10]How to migrate to 64 bit from 32 bit versions of Windows

Technical Level : Intermediate

Summary

How to upgrade or migrate from a 32 version of Windows to the 64 bit version of Windows 10.

Details

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With the release of Windows 10 November Update (1511), and later versions such as the Windows 10 Anniversary Update (1607), you can switch directly to a 64 bit version of Windows 10 with or without a product key.

• Switching to Windows 10 64 bit is free, you don't have to pay for it. As long as you have a qualifying Windows 7 or 8 or Windows 10 license, you are entitled to use it.
• Switching requires that you perform a new installation, that means files, applications and settings will be deleted.
• You will have to reinstall applications and native 64 bit drivers.
• Backup before migrating: How to: Create a system image in Windows 10

Step 1: Download Windows 10 64 bit then create a bootable copy:

How to download official Windows 10 ISO files

Step 2: Boot from the 64 bit Windows 10 install media, then perform a custom or clean install:

• How to: Perform a custom installation of Windows - Choose this option if you want to recover files from Windows.old
• How to: Perform a clean install of Windows 10 - Choose this option if you want to erase the drive, files and applications will be deleted.

Resources: How to install and activate Windows 10 using your Windows 7 or Windows 8 product key

More details at groovypost.com:

How to Switch from Windows 10 32-bit to 64-bit Versions - The following covers switching using build 10240.

Thank you,

Andre

[출처 : https://answers.microsoft.com/en-us/windows/wiki/windows_10-windows_install/how-to-migrate-to-windows-10-64-bit-from-32-bit/40d90c4e-8845-4bcb-bb2f-aeab312caf74]

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If your PC has a 32-bit version of Windows 10, then you're missing out on some productivity advantages. Use this guide to switch to the 64-bit version.

Microsoft offers Windows 10 as a free upgrade for computers running a genuine copy of Windows 7 or Windows 8.1. Also, similar to previous releases, the operating system is available on different editions and two versions: 32-bit and 64-bit.

While upgrading from Windows 10 Home to Windows 10 Pro is not free, what many people are unfamiliar with is that Microsoft won't ask for more money to upgrade from a 32-bit to a 64-bit version.

However, the upgrade path only allows moving from a qualifying version to its equivalent edition on the same architecture.

This limit means that if your PC is running a 32-bit version of Windows 8.1, after the upgrade you'll be stuck with the 32-bit version of Windows 10 -- even if your computer's processor can handle the 64-bit version.

The only solution is to make a clean installation of the operating system and reconfigure all your apps and settings.

You can easily get this information from the Settings app.

1. Use the Windows key + I keyboard shortcut to open the Settings app.
2. Click System.
3. Click About.

4. Under System type, you will see two pieces of information: if it says 32-bit operating system, x64-based processor, then it means that your PC is running a 32-bit version of Windows 10 on a 64-bit processor. If it says 32-bit operating system, x86-based processor, then your computer doesn't support Windows 10 (64-bit).

Alternatively, you can open System Information to gather the processor information:

1. Open the Start menu, do a search for System Information, and press Enter.

2. Under System Summary, on the right side, look for System Type. If you see x64-based PC, then your computer is capable of running a 64-bit version of Windows. If you see x86-based PC, then you can't install another architecture of the operating system.

[출처 : http://www.windowscentral.com/how-upgrade-32-bit-64-bit-version-windows-10]