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Previously I have a Ubuntu 16.04 live USB. Now I have a new computer with Windows 10 installed. Since it uses UEFI firmware, I also have to install Ubuntu in UEFI mode.

Do I need an UEFI bootable Ubuntu 16.04 live USB? Is my previous live USB not UEFI bootable?

Boot configurations:

Boot\CSM (Compatibility Support Module)
  Boot from storage devices = UEFI driver first
  Boot device control = UEFI and Legacy OPROM
  Fast Boot = disabled

Boot sequence
  option 1 = UEFI SanDisk blablabla (This is the Ubuntu 16.04 .iso USB.)
  option 2 = blablabla (This is Windows 10.)
  option 3 = disabled
  option 4 = disabled

karel
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Y.S.
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    All recent Ubuntu installers work for both UEFI & BIOS. It just is how you choose to boot from UEFI/BIOS is then how it installs. From UEFI boot menu you should see two USB boot options one UEFI: flash and the other flash where flash is name or label of your USB flash drive. You may have to turn on allow USB boot in UEFI settingsl. https://help.ubuntu.com/community/UEFI & http://askubuntu.com/questions/221835/installing-ubuntu-on-a-pre-installed-windows-10-with-uefi You may want the latest Ubuntu 16.04.3 – oldfred Dec 21 '17 at 01:50
  • Boot\CSM(Compatibility Support Module):

    Boot from storage Devices = UEFI driver first; Boot Device Control = UEFI and Legacy OPROM; Fast Boot = disabled; 4.Boot

    Sequere Boot option 1 = UEFI SanDisk blablabla(This is the Ubuntu1604 iso USB) option 2 = blablabla(This is Windows10) option 3 = disabled option 4 = disabled

     – Y.S. Dec 21 '17 at 11:30
  • This is my boot configuration, I still have error,and therefore I am wondering is that possible, choosing iso Partition scheme and BIOS mode as BIOS&UEFI is the problem. – Y.S. Dec 21 '17 at 11:32
  • https://askubuntu.com/questions/395879/how-to-create-uefi-only-bootable-usb-live-media

    This is why I try to make a UEFI bootable USB

     – Y.S. Dec 21 '17 at 11:35
  • On my Asus motherboard, the UEFI & BIOS boot setting with UEFI first only booted in BIOS mode. I had to use UEFI only setting to boot flash drive in UEFI mode. I was using a standard configured flash drive that would boot in either mode, and it just kept booting in BIOS mode until I changed setting. Did not know back then about UEFI only, but not sure even then if that would have worked. – oldfred Dec 21 '17 at 15:35
  • If you use a cloning tool to create the USB boot drive, it will be bootable both in UEFI and BIOS mode. The Ubuntu Startup Disk Creator in 16.04 LTS and newer versions is a cloning tool. Also gnome-disks and mkusb can clone from the iso file to a USB pendrive. In Windows you can use Win32DiskImager or Rufus (in dd mode). – sudodus Dec 16 '18 at 13:40

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