How to change boot option and set the USB as first boot option
I am configuring my ASUS A53SC laptop with a dual-boot dystem. I already have Windows intalled and I want to install Linux from my USB stick. Booting from USB is not configured, and I can’t add a new boot option in the BIOS.
My Laptop is running Windows 7 64-bit. I cant post an image of my BIOS boot menu, but it is like this.
3 Answers 3
Just select Hard Drive BBS Priorities and you should see your usb storage device there. Then drag it to the top.
On my computer (hp)
esc to interrupt boot process
F10 to go to BIOS settings
Device order
Press F6 to raise F5 to lower F1 to disable F10 to save and reboot arrow keys to move
arrow down to usb
Your system type is UEFI. It means your bootable USB must contain the EFI files in the directory /EFI/BOOT folder In order to be recognized by your system at boot up.
Without those files your system will not recognize bootable USB and simply proceed to normal windows startup. Look in your disk image if it already contains these files and folder.
Visit my question with the same problem and how I managed to make it recognized: USB not booting. I created a folder in my bootable USB as /EFI/BOOT. Then I downloaded BOOTX64.efi, Grubx64.efi, MokManager.efi and grub.cfg and copied to that folder.
I’m dual booting kali-linux so the files I copied might vary according to linux OS but I’m sure .efi files are still required. These files can also be same for all linux OS as they are just only boot files.
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Thread: How to Add New Boot Option
First Cup of Ubuntu 
How to Add New Boot Option
I have installed Ubuntu 12.04.1 on a Asus G75 Laptop, but I can’t get it to boot. All the other Bios that I have used had a boot from hard drive option, this one does not. The Bios has the Aptio Setup Utility using UEFI and has "Boot Option Priorties". The boot options available right now are "Windows Boot Manager" and �P2: HL-DT-ST DVDRAM GT51M� listed on the Boot tab.
I go to "Add New Boot Option" to add a new EFI boot option to the boot order and hit enter. 4 items are listed:
Add boot option
Select Filesystem [PCI(1F|2)\DevicePa. ]
Path for boot option
Create
I think I need "Path for boot option". When that is selected it says Enter the path to the boot option in the format fs0:\path\filename.efi
Is this the correct selection I should make, and if so what is the path I should enter.
Any help would be appreciated as this has been driving me up the wall.
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Super Master Roaster 
Re: How to Add New Boot Option
When you booted the Ubuntu 6+4 bit installer, it should have given two choices, one UEFI/EFI and the other BIOS/legacy/AHCI or whatever it calls it. Which ever way you boot installer is how it installs. So if you install Ubuntu in BIOS mode and have Windows in efi mode you need to fix Ubuntu to have an efi entry. Boot repair can do that if Windows is in efi mode. If not just post link to BootInfo report.