HTTP is not designed as a video streaming solution. It is a cludge and barely works - just look at all the youtube and other video buffering issues....
Another small matter is that if you leave the internal drive active while installing, it will be mentioned in grub when you boot the USB drive.
This...
Wow. Seems like you've done everything I could have suggested. I can only suggest that you double-check for small errors - perhaps typing everything...
Never heard of WattOS before, but google says it is a lite-Ubuntu distro. That means you have all sorts of remote access methods available, provided...
You can convert a MBR drive to gpt. But if a second drive I suggest an efi partition as the first partition even if grub will install into the first...
The default is the Unity with the icons on the left side. My monitor is 4:3 so I have more space on top & bottom so the old layout works better, plus...
I do not use nor know about encryption. But un-encrypting your partition(s) is what Boot-Repair needs to be able to repair it. It also has a link on...