Move USB device to the top of that hard drive list.Expand to show all hard drive device options.NOTE: If you cannot find USB or Removable Devices among the device options, your BIOS may list it under Hard Drive Devices. Move USB to be first in the boot sequence.All of the available system devices will be displayed in order of their boot priority. Using the arrow keys on your keyboard, select the BOOT tab.When you choose to enter BIOS Setup, the setup utility page will appear.(Depending on the company that created your version of BIOS, a menu may appear.) During the initial startup screen, press ESC, F1, F2, F8 or F10.Press the Power button for your computer.Start by plugging the thumb drive into a USB port. Otherwise the computer will load from the hard drive as normal.
If you’re booting from USB media, you must change the BIOS boot order so the USB device is listed first.
#MAKE BOOTABLE MAC USB ON WINDOWS SOFTWARE#
The boot order tells the machine which devices to search for the software needed to launch the computer and the priority each device in that search. That’s because the BIOS settings include the boot sequence the machine follows when starting up.
#MAKE BOOTABLE MAC USB ON WINDOWS PC#
Starting your PC using USB rescue media is not difficult, although it first requires an adjustment in the BIOS (Basic Input Output System). The Startup Manager only lists drives that include bootable content.
NOTE: Have multiple USB devices connected to your Mac? Don’t worry. The machine will start to boot from the USB drive.