Fixing a 32 Bit OS on a 64 Bit computer

Daniel Cadzow · Nov 5, 2014

While updating my HD to an SSD I discovered we were running a 32 bit OS on a 64 Bit processor. So, I decided to upgrade from Win 7 to Win 8.1. But every time I install 8.1 it gives me a 32 bit version.

So, I booted of the old drive, formatted the new drive, disconnected the old drive and booted from a USB to install win 8.1... Same thing.

Seems like somehow the install software is detecting the old 32 bit OS and not the 64 Bit processor. Can you help me to get the 64 bit OS on my 64 Bit PC?

Thanks,
Dan

Supermuncher85 · Nov 5, 2014

You sure you got the right installer? 64 bit should have x64 at the end. If you have the en_windows_8_1_pro_vl_x86_dvd_2972633 aka x86 it's 32bit.

CDdude55 · Nov 5, 2014

Well the software itself has to be 64-bit, the OS doesn't changed based on the CPU you use. Are you sure the Windows 8.1 you have is 64-bit?

slyu9213 · Nov 5, 2014

Like the previous two users said. Operating Systems (Windows, Linux/Ubuntu, etc) have at least two different installers/dvds. One is for 32-Bit and the other is 64-Bit. From your description you are using a 32-Bit installer and expecting it to install a 64-bit version of the OS, which can't happen.

USAFRet · Nov 5, 2014

How did you obtain the Win 8.1 install?

Pinhedd · Nov 5, 2014

Daniel Cadzow :

If you used the Windows 8 setup tool to automatically download the installation media it will download the media that matches the architecture of the current OS installation, not that which is best suited for the microprocessor. For example, if you have a 32-bit version of Windows 7 the setup tools will download the 32-bit version of Windows 8/8.1. To get around this, you will need to download and install a 64-bit version of Windows 7 (you can find these on Microsoft's Digital River repository) and repeat the process to get the 64-bit Windows 8/8.1 media.

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Fixing a 32 Bit OS on a 64 Bit computer

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