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      Cannot Boot From a USB Key - Idea Notebooks / Desktops


      System will not boot from a USB key, even though USB is set in the boot order, the system still boots from the HDD.  


      Affected configurations

      The above symptom may occur on the following systems:
      All Idea Systems with UEFI BIOS

      The above symptom may occur under the following operating system:
      Microsoft Windows 8



      Lenovo machines shipped with Microsoft Windows 8 preloads are configured in UEFI mode.  Legacy-based boot media will not boot successfully on Think systems. The following procedure will enable you to create bootable Win 7 or Win 8 USB keys on UEFI enabled systems.

      Start with a blank USB key of at least 4GB capacity.

      To install Microsoft Windows 7 or Windows 8 in UEFI mode, the 64-bit versions of the respective operating system DVD media will be required.  A full Windows 7 or Windows 8 DVD media is required.  An upgrade DVD may not function correctly during base operating installs.

      To create UEFI bootable USB media that can be used to install Microsoft Windows 7 or Windows 8 64-bit operating systems on Lenovo computers, complete the following steps:
      1)   Open a Command Prompt with Administrator privileges in either Windows 7 Pro or Windows 8 Pro.
      2)   Insert the target USB boot media device into an available USB port.
      3)   Type DiskPart in the command prompt.
      4)   Type List Disk (make note of the disk number of the target USB drive).
      5)   Type Select Disk X, where X is the target USB drive noted in step 4.
      6)   Type Clean.
      7)   Type Create Partition Primary.
      8)   Type format FS=fat32 quick.
      9)   Type Active.
      10) Type Assign.
      11) Type list volume.
      12) Type Exit.

      Now copy the entire contents of the desired operating system onto the newly created UEFI boot media device.

      If the AUTORUN.INF file fails to copy from the Windows DVD media to the USB key, then use Notepad to create a new AUTORUN.INF file on the USB boot media by following the steps below:

      Open the AUTORUN.INF file on the DVD media with Notepad and copy the contents.

      1. Create a new file on the USB media with Notepad and paste the contents from step
      2. Save the file as AUTORUN.INF.


      UEFI BIOS requires 64-bit versions of Windows operating systems




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      • Alias ID: IG20130809-001
      • Document ID: HT078684
      • Last Updated :26 Mar 2014
      • © 2016 Lenovo