Win8 method to determine system startup type

The most troublesome way:

When the operating system is installed, the installer collects some of the necessary information, and the computer is started as one of them. Find the Setupact.log file in your computer C:windowspanther folder, open it in Notepad, and then search detected boot environment, where you can see how the system started.

The most intelligent way:

If you know about the relationship between GPT and Uefi startup, you probably knew that Windows would have to boot from a GPT hard drive (or not) in UEFI mode. In Disk Management look at the type of hard disk, if it is GPT, then the computer must be UEFI started. Turn on disk Management, right-click on the primary hard drive, and if "Convert to GPT Disk" appears, the hard disk is MBR type, or "Convert to MBR disk" indicates that the hard drive is a GPT type (because it is the primary hard drive, which is a gray unavailable state).

Master Use this method:

Press Win+r to open the run, enter Msinfo32, and return to view system information. In BIOS mode, if "legacy" is displayed, the system starts with the legacy BIOS, and if it is UEFI, the UEFI is displayed.