(Redirected) UEFI option for booting from USB drive is deleted after Ubuntu 16.04.2 (64 bit) installation (Dual boot with Windows 10 64 bit) on Dell Vostro 3558.

Hi,

To setup dual boot I have used information from the following:

• http://www.dell.com/support/article/us/en/19/SLN301754/how-to-install-ubuntu-and-a-recent-windows-operating-system-as-a-dual-boot-on-your-dell-pc?lang=EN
• http://www.dell.com/support/article/us/en/19/SLN151664/how-to-install-ubuntu-linux-on-your-dell-pc?lang=EN

Resetting UEFI to default brings back the USB boot option again.

Any help is welcome. Thanks in advance: SRoy