Ken has reinstalled Windows 10 on an old Dell laptop, and it's running way too slow. So he's trying to install Linux instead. But it won't boot from the USB key no matter how hard he tries. Leo says to make sure you format the USB key into a UEFI format. That should enable it to read it.
Glen wants to know if he should create a USB Key with Linux on it and boot to it. Leo says he can. It's called a Live Distro and just about every flavor of Linux does it. Leo likes PopOS. But understand that it will be a bit slower running off the USB key and eventually, it will wear out the USB key. But by then, you can decide if you want to install it or not, and they will probably offer that option on the distro. Will he still be able to see his Windows desktop? Leo says no. He will see the internal drive, but won't' be able to run Windows programs within it.
GScott is having issues with rebooting to USB on his computer and his USB Key isn't booting up. Leo says to make sure your USB key is properly formatted and made. Turn off secure boot, then try changing the boot order in BIOS to check USB first.
Lex uses Windows Defender, but he came across a thumb drive and wants to check it to see if it's safe to use. Leo says he really can't. If he plugs it in, and it's infected, it will compromise his system. Firmware can be modified on a thumb drive to contain malware as a payload, and it's undetectable. The worse part is not one USB drive manufacturer has done anything to correct the bug. Wired has a story on it.