Boot from USB in Aptio Setup Utility (American Megatrends v 2.15)?

Date Published: 03/08/2013 12:21 PM
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I just recently bought a Asus G46v. It came with Windows 8 which I do not want - I was planning on installing Windows 7 almost immediately. I have the Win7 .iso ready on my flash drive (set it up with the Microsoft-provided bootable USB tool). I had to figure out how to get into the BIOS initially from Windows 8, but figured it out with no problem. Thing is, when I go to the Boot section of the BIOS, it only gives me one boot option (Windows Boot Manager). There is an option to add a new boot option, but it is rather confusing. In this option, it asks me to specify a name, select a filesystem from the list (only one available, PCI(1F|2)\DevicePath(Type 3, SubType 12)HD(Part1,Sig1911a6cf-3fb3-482e-a90c-adf7ec2c1936), path for boot option (info area says must be in the format of fsx:\path\filename.efi), and finally, create. It seems as if I have to set the path for the USB, but I have no idea where to find that.

Any help would be great. Thank you in advance :)

EDIT: i've seem to have found a .efi file within my bootable USB. the file path is D:/efi/microsoft/boot/cdboot.efi. I attempted to create the new boot option and set it above booting to the windows boot manager. I then saved the BIOS settings and restarted the computer, but it went straight into Windows 8 once again.

submitted by jrodfosheez
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  • Adrian posted this on 07/23/2013 at 7:52 PM

    Hi, I have the same problem. Did you get any answers ? Thanks
  • Cuban_Yoda posted this on 09/04/2013 at 9:25 PM

    Hello!, The same problem have I
  • ubuntuaddicted posted this on 10/30/2013 at 11:36 AM

    here's the steps for installing win7 from a usb stick, obviously ignore the win7 part but the other stuff should be applicable

    Here's the solution:

    1) Place a bootable copy of Wndows 7 on the USB drive in question (there are several utilities available for accomplishing this, including PowerISO, v4.8 or greater, and Microsoft's USB DVD Tool

    2) Access the bios during bootup using F2

    3) Enable CSM under the Boot tab and Save

    4) Re-boot and re-access the bios again using F2

    5) Select the USB option (the one without a prefix of UEFI) as Boot #1 option and Save

    6) Re-boot and Windows 7 will commence it's install from the USB drive

    *Once the initial install takes place and the machine re-boots, you must re-access the bios, disable CSM, and set the internal hard drive as the Boot #1 option and save
  • brian posted this on 03/19/2014 at 6:15 PM

    to enable csm you will need to disable secure boot if it is enabled.

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Boot from USB in Aptio Setup Utility (American Megatrends v 2.15)?

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