Samsung Series 5 BIOS not detecting any bootable devices
OK I figured it out.
Under the Boot tab I needed to Disable Secure boot, this added an option to choose a boot option which includes CSM, UEFI and CSM and UEFI.
Searching over the web I found that, at least the BIOS version in Samsung Series 5 (not sure if all Series X) does not work quite well with UEFI by itself, but it needs compatibility support.
So by using CSM or CSM and UEFI I was able to get my bootable devices listed again (I still wonder why the maker sets UEFI as an "optimised" default if it's not totally supported).
And by disabling Fast boot mode under Advanced tab, bootable USB is now running!
Anyways, thanks for your help!! :)
I am posting this answer since this same problem for the model NP300E5X Series is not available anywhere.
The solution to this problem is:
- Go to BIOS settings.
- In ADVANCED tab, disable fast boot.
- In BOOT tab, enable UEFI Boot.
That's it. :)