Want to migrate to Parallels and it’s not working correctly on your Windows 7, 8 or 10 machine? Or even if you just want to know which system you are using UEFI or BIOS. Getting this information is little difficult or I should say complicated.

Follow the instructions in the Video to find out which boot environment you are using.

Open Windows Explorer by pressing Windows key and E, navigate to C:\Windows\Panther\setupact.log

Open the file in Notepad and find the following:

Callback_BootEnvironmentDetect: Detected boot environment:

Right after colon you will see either BIOS or UEFI, that is your boot environment.

In case the setupact.log file is missing, open a Run box and type msinfo32. Look for the entry labeled BIOS Mode. If it says “Legacy,” then you’re running BIOS. If it’s anything else, it will be listed.