Booting from a USB or CD with a UEFI Boot Configuration
revision 220226a
If your computer is any of these it will probably be using the UEFI boot configuration.
2007 or newer
came with MS Windows 8 or newer
During boot most computers will show a hotkey to press to enter the Bios/Setup. You can also check the internet for your make and model to find the hotkey.
boot the computer
when the hotkey screen is displayed start pressing the key repeatedly
The Bios/Setup should open, unfortunately, there is no "standard menu". Use the keyboard arrow keys, enter and any hotkeys shown on the screen to navigate and select items.
disable Secure Boot
Newer computers will also show a "Boot Menu" hotkey during boot, you can use this to select the USB or CD during boot. Otherwise, look for an entry in Bios/Setup called "Boot options" and then "Boot order" or something similar. Set the USB or CD as first in the boot order.
Save the settings and exit the Bios/Setup
If the computer is running MS Windows:
boot Windows
disable Fast Startup (this feature is only in versions 8+ and upwards)
do normal shutdown
do not use hibernation
reboot using the USB or CD
NOTE: booting from a CD is slow, you'll need to be patient
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