Win7/win8/win8.1 difference when upgrading win10

Win10 system is the trend of today's Internet. Once online, everyone is eager to upgrade to the latest win10 system, but each computer is in a different system, the upgrade method is also different, according to the truth, after win7 The version can be directly upgraded to win10, but now there is a preview version of win7, win8, the upgrade method and the genuine win7, win8 are also different, for example, the win10 preview version wants to upgrade to the official version of win10, you must return to the original The version is upgraded. The following small series will introduce you to the differences between Windows and several systems to upgrade Win10.

The following is a brief description of Xiaobian.
1, upgrade from Win7/Win8/Win8.1 system to win10
If you are a Microsoft officially authorized user, then you can upgrade to win10 official version for free (such as win8 regular version can be upgraded to win10 ordinary Version) and permanent use;
If you are using an unauthorized version of win7.Win8, then you still need to purchase the license after upgrading the win10 system<2>2, upgrade from win10 preview to win10
preview can Upgrade directly, but if you want to use the official version after the upgrade, you will need to pay for the Windows 10 license. If you are willing to participate in the Windows Membership Program Test Preview, you do not need to purchase it.
3, genuine authorized win7/win8/win8.1 upgrade to Win10 preview version after upgrading win10 official version
According to Microsoft's instructions, this is also free upgrade and permanent use, but it is not clear, but we You can first go back to the previous windows version and then upgrade the official version of win10.
Note: Win10 member test users need to register to join, and the price may be that you will keep installing test updates, when Microsoft is a mouse.
The different upgrade methods of the version are also different. You can refer to the above methods to update accordingly. However, because Microsoft has too many systems, it is too complicated, which makes many users easy to confuse. Try to use the above method. .