After the win10 upgrade, the software will not? Upgrade Win10: What will be lost

Many friends worry that some software will be gone after the win10 upgrade. Today, Xiaobian tells you what can be reserved for the system upgrade to Windows 10? Microsoft pointed out that the files that can be retained by different system upgrades to Win10 Technology Preview are also different. Windows 8.1 or Windows 8 retains Windows settings, personal files, and most applications when upgrading Windows 10 Technology Preview. Windows settings, personal files, and most applications are also preserved when Windows 7 is upgraded. Vista can't keep anything, you have to boot from the media and perform a fresh install. Windows RT 8.1 or Windows RT cannot be upgraded to Windows 10 Technology Preview. Note: If you are running Windows 8.1, Windows 8, or Windows 7, but the system language is not English, Chinese (Simplified), or Portuguese (Brazil), you can only keep personal files during the upgrade, and you cannot keep the application or Windows settings. If you have a language pack or language interface pack (LIP) installed on your Windows 8.1, Windows 8, or Windows 7, they will be automatically removed when you install the Technology Preview. Related tutorial: win10 system official version official download address and win10 system official version two modes introduced