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

APPLIES TO:
  • Parallels Desktop 10 for Mac
  • Parallels Desktop 9 for Mac
  • Parallels Desktop 8 for Mac
  • Parallels Desktop 7 for Mac
  • Parallels Access

Symptoms

You are not able to migrate your Windows 8 or Windows 7 PC into a Virtual Machine using Parallels Transporter. Migration fails on detecting the Operating System type.

Cause

Most probably your PC has GPT partition on the hard drive and is using EFI/UEFI instead of BIOS.

Resolution

Parallels Desktop currently does not support migrating computers with GPT partitions and EFI/UEFI.

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

  1. Start your PC
  2. Go to Start ► Computer

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

  4. Open setupact.log
  5. search for this string:

    Callback_BootEnvironmentDetect: Detected boot environment:
    

    It should tell us the boot environment: BIOS or UEFI:

    Code:Callback_BootEnvironmentDetect: Detected boot environment: BIOS
    Code:Callback_BootEnvironmentDetect: Detected boot environment: UEFI
    

In Windows 8, Windows 8.1 if the Setupact.log file missing in the Panther folder, we can check the Boot Environment using the following steps :

  1. Run -> msinfo32

  2. Look for the BIOS Mode entry.

  3. If the entry is present as Legacy then its BIOS, otherwise the respective Boot Environment will be listed.



Related articles:

Search words:

cannot migrate my PC to Mac

Transporter fails

unable to move PC to Mac

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