All tutorials I see on the internet say about a Windows_˜BT folder or something like that, and saving a .esd file extension somewhere else, but in my Windows 8.1 with Bing, after the download is finished, I just have a c:\ESD directory, with 2,39 gb, that looks exactly like a recovery disk structure but with a setup.exe that when executed gives a windows 10 installation prompt. I haven't seen any post whatsoever on google about this specific scenario.

I don't want to install Windows 10 yet, but since this free upgrade is for a limited time, I would like to know if, by saving this directory, I will be able to install windows 10 in the future.

Has anyone experiencied something like the c:\ESD folder?


Download the official ISOs from Microsoft and store them on an external HDD so that you can use them later for a reinstall.

  • My system is Windows 8.1 with Bing. Don't know if this ISO is going to be compatible and will still need to burn the iso somehow to an usb flash drive. – Somebody still uses you MS-DOS Nov 27 '15 at 2:01
  • The bing gets updates to Win10 Home. So download the Home ISO – magicandre1981 Nov 27 '15 at 5:23
  • You're right that it becomes Home, from microsoft.com/en-us/windows/windows-10-specifications, From Edition Windows 8.1 To Windows 10 Home, 4 Also applies to Windows 8.1 country specific editions, Windows 8.1 Single Language, Windows 8.1 with Bing. But since this download is a limited offer from Microsoft for a year, I don't know if I need the specific .exe that was downloaded. – Somebody still uses you MS-DOS Nov 30 '15 at 4:37
  • More sources for the Windows 10 Home: windows.microsoft.com/en-us/windows-10/…. And in the FAQ: Can I reinstall Windows 10 on my PC after upgrading? Yes. Once you’ve upgraded to Windows 10 using the free upgrade offer, you can reinstall or perform a clean installation on the same device. You won’t need a product key to re-activate Windows 10 on the same hardware. For more info on how to create your own Windows 10 installation media, go to the Microsoft software download website. – Somebody still uses you MS-DOS Nov 30 '15 at 4:47

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