Boot a PC – MAC from USB device UEFI or Legacy

How to Boot a PC from a USB device UEFI or Legacy?

This guide also contains a number of recommendations to ensure the efficiency of the external USB device UEFI or BIOS Legacy mode boot procedure.

If you are reading this guide, probably you have built a multibootable device with SARDU MultiBoot Creator.

First of all we have to  change some Computer BIOS Settings*:

  • Disable Secure Boot: find the Secure Boot settings, and if possible, set it to Disabled. This option is usually in either the Security tab, the Boot tab, or the Authentication tab.
  • Enable Legacy CSM Boot Support:  find and enable the launch CSM (Compatibility Support Module) or the Legacy Boot. This option is usually in the Boot tab.
  • Change the BIOS boot order: Change the BIOS boot order so the USB device option is listed first. This option is usually in the Boot tab.
  • Enable BBS popup: some PCs have the BBS (BIOS Boot Screen) popup option disabled. Please enable it. This option is usually in the Boot tab.Finally save changes and exit. Restart your computer.

Watch for BBS PopUp message

Boot PC POST messages
Press DEL to run SETUP
Press F8 for BBS POPUP

Usually, during the POST,  the message press Fx key to get boot menu appears. Please take this shortcut to choose from the list the bootable device.

ESC F8 F12 to BBS PopUp

bbs-popup UEFI - Legacy boot from USB
bbs-popup UEFI – Legacy boot from USB

Bios Shortcut for Desktop

MotherboardBIOSHotkeyFunction
AcerDelEnter Setup
F12Boot Menu
ASRockAMIF2 or DelRun Setup
F6Instant Flash
F11Boot Menu
TABSwitch Screeb
AsusPhoenix-AwardDelBios Setup
TABDisplay BIOS POST Message
F8Boot Menu
ALT + F2Asus EZ flash 2
F4Asus Core Unlocker
BioStrarPhoenix-AwardF8Enable System Configuration
F9Select Booting Device after POST
DelEnter SETUP
ChainTechAwardDelEnter SETUP
ALT + F2Enter AWDFLASH
ECS (EliteGrour)AMIDelEnter Setup
F11BBS Popup
FoxConn (WinFast)TABPOST Screen
DelSetup
EscBoot Menu
GigaByteAwardEscSkip Memory Test
DelEnter Setup/Q-Flash
F9Xpress Recovery Xpress Recovery 2
F12Boot Menu
IntelAMIF2Enter Setup
MSI (MicroStar)Enter Setup
Shortcut for Desktop Bios and BBS Popup

Bios Shortcut for Notebooks

ManufacturerBIOSHotkeyFunction
AcerPhoenixF2Enter Setup
F12Boot Menu (Change Boot Device,Multi Boot Selection Menu)
Alt+F10D2D Recovery (disk-to-disk system recovery)
AsusAMIF2Enter Setup
ESCPopup Menu
F4Easy Flash
Phoenix-AwardDELBIOS Setup
F8Boot Menu
BenqPhoenixF2BIOS Setup
DellPhoenix,AptioF2Setup
F12Boot Menu
eMachines (Acer)PhoenixF12Boot Menu
Fujitsu SiemensAMIF2BIOS Setup
F12Boot Menu
Gateway (Acer)PhoenixClick mouse or EnterMenu
F2BIOS Settings
F10Boot Menu
F12PXE Boot
HP (Hewlett-Packard)/ CompaqInsydeESCStartup Menu
F1System Information
F2System Diagnostics
F9Boot Device Options
F10BIOS Setup
F11System Recovery
EnterContinue Startup
Lenovo (IBM)Phoenix SecureCore TianoF2Setup
F12MultiBoot Menu
MSI (Micro Star)***DELSetup
F11Boot Menu
TABshow POST screen
F3Recovery
Packard Bell (Acer)PhoenixF2Setup
F12Boot Menu
ToshibaPhoenixEsc,F1,F2enter Setup
Toshiba Satellite A300F12bios
Shortcuts for Notebooks BIOS and BBS Popup

Boot from  legacy  or UEFI **

SARDU MultiBoot USB Menu
SARDU MultiBoot USB boot Menu

With Windows 10, if you don’t see the boot options, it may be necessary press the Shift button while shutdown or restart the PC.

How to boot a Mac from a USB device? **

UEFI Boot Mac
Booting a Mac from a USB UEFI built with SARDU MultiBoot Creator
  • Turn on your Mac by pressing the power button, by choosing Restart in the Apple menu if it’s already on.
  • Press and hold the Option (⌥) key immediately upon hearing the startup chime. Release the key after Startup Manager appears.
    Startup Manager will scan and list connected drives and volumes that can be booted from.
  • Highlight the volume you want to use by using your trackpad or mouse, or left and right arrow keys on the keyboard.
  • in conclusion press the Return key  or Double-click  to boot your Mac from the selected volume.

*Only with recent PCs that support UEFI boot
** Only Pro version of SARDU MultiBoot Creator support UEFI boot