Hi, I was trying to boot a Dell laptop by using nomadbsd in a USB stick, however, after I press F12 I didn’t see the USB stick popping up as an option to boot. I was able to boot my desktop PC with it, and I was able to boot that laptop using the same USB stick with Ubuntu. Any thoughts?
hi Tfcheng,
if you are in the Bios and see no USB boot options than your PC has no USBboot option.
what you can do is downloading the freeware SUPERGRUB 2 .iso
here is the link 
https://www.heise.de/download/product/super-grub2-disk-55737
Burn this image to a CD ROM with your burning program such like IMG Burn ISO Burn
Plug the NOMADBSD STICK in your computer.
Boot your computer from CD Drive with this superGRUB 2 boot disk.
You see the menue and press ENTER.
Now you see many boot options.
Try it out what NOMADBSD IS.
That will work.
Additional tips - we don’t know what model your Dell laptop is.
If it’s a modern uefi model, are you flashing the 64-bit image, or the 32-bit image (use the 64-bit image if so)
What method did you flash the NomadBSD image with? If you used Windows to do so, Etcher will properly flash the image. If you are using something like Rufus - when asked whether to burn in iso mode, or DD mode, choose the DD mode.
Of course, using the commandline DD mode from Ubuntu is fine too.
But yes, if your Dell is very modern, then be sure to disable secure-boot (if enabled) in the bios setup as mk1 mentioned.