Identify computers with EFI/UEFI or BIOS firmware interface

Article:TECH210831  |  Created: 2013-09-24  |  Updated: 2013-09-25  |  Article URL http://www.symantec.com/docs/TECH210831
Article Type
Technical Solution


Issue



How to know if the computer is using EFI/UEFI or BIOS firmware interface


Solution



To determine whether your computer system is using BIOS or EFI/UEFI please follow the steps below:

1. Login to Windows.

2. Go to Start ► Computer

3. Navigate to C:\Windows\Panther\setupact.log


 
4. Open setupact.log

5. search for the following string:


'Callback_BootEnvironmentDetect: Detected boot environment:'


It should tell us the boot environment: BIOS or UEFI in the following format:


Code:Callback_BootEnvironmentDetect: Detected boot environment: BIOS

OR


Code:Callback_BootEnvironmentDetect: Detected boot environment: UEFI




Article URL http://www.symantec.com/docs/TECH210831


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