The settings for your computers boot behavior are in a menu called the BIOS, which is a pre-startup menu you can access by pressing a key specific to your computer model as your computer turns on. In order to boot from a USB flash drive, the flash drive must be set up as a bootable item, and it must have a disk image (ISO) file with an operating system or similar service installed on it.
Most computers use one of the function keys (e. g. , F12) as the BIOS key, though some computers will use the Esc key or the Del key.
On a laptop, the USB ports are typically on the sides of the housing, while desktop computers typically have the USB ports on the front or back of the tower.
For example, if you’re attempting to install or use Ubuntu Linux from the flash drive, you would paste the Ubuntu ISO file into the flash drive’s window. Skip this step if you created a bootable USB using the Windows 7 or 10 installation tool.
You may have to confirm this decision.
You’ll probably find this section on the Advanced tab, though many BIOS variations have dedicated Boot Order tabs as well.
For example, you might press Esc to save your changes and then press Y to confirm that you want to save and exit.
