Common BIOS settings for USB booting
How to Access BIOS: computer and motherboard manufacturers and BIOS suppliers use varying keyboard keys that can be pressed
during system post to access system BIOS. The following list presents some keyboard key combinations that have been known to work.
Newer BIOS Boot Menu: Many newer computers detect the USB device as a hard drive (USB-HDD0). In which case, you can press a
specific key (F2, F10, F11 or ESC) during system post to access the "Boot Menu". Select your USB DISK from the Boot Menu and
resume startup.
BIOS/UEFI (máquinas recentes com Windows 8) aceda à BIOS - verifique as opções destes exemplos ou semelhantes:
1. Advanced / USB Legacy Emulation: selecionar ENABLED
2. Advanced / System Configuration / Boot Mode: alterar de UEFI BOOT para GSM BOOT
3. Safe Boot: Desactivar
1. Boot / Secure Boot: selecionar DISABLED
2. Boot / OS Mode Selection: alterar de UEFI BOOT para CSM BOOT
3. Alterar a Boot Option Priority
1. Advanced / USB Configuration/ Legacy USB Support: selecionar ENABLED
2. Boot / Boot Configuration / Launch CSM: selecionar ENABLED
3. Alterar a Boot Option Priority
Para discos SSD (cada vez mais usual) deve ativar também o AHCI Mode - Procure na BIOS opções semelhantes aos exemplos:
1. Advanced / AHCI Mode Control: selecionar MANUAL
2. Advanced / AHCI Mode Control / Set AHCI Mode: selecionar ENABLED
1. Advanced / SATA Mode Selection: selecionar AHCI
Older BIOS boot options: Possibly you will need to make the system detect and boot your USB device by changing settings in the BIOS:
USB-HDD “Preferred boot method”, USB-ZIP “May or may not work”, USB-FDD “Unsupported”
Tips:
If your BIOS lists the USB memory stick as a hard drive, you should select it as the 1st boot device.
Remove other USB boot options from the boot priority list when attempting to boot from USB-ZIP or USB-HDD to avoid conflicting.
Intel-based Macs support starting from an USB device's volume: press and hold the Option key to access Startup Manager.
- On a MacBook Air, the computer may shutdown automatically as a preventive measure if a USB device with issues is
connected, or if the USB port on the MacBook Air itself is damaged.
- If you use Boot Camp, you may not be able to boot natively into supported versions of Microsoft Windows XP or
Windows Vista operating systems installed on external USB hard drive.
If the USB isn’t detected try another port or use BOOT CD (same procedure).
Keyboard Commands used to access BIOS
ALR Advanced Logic Research, Inc. PC / PCI
CTRL+ALT+ESC or CTRL+ALT+DEL
AMD (Advanced Micro Devices, Inc.) BIOS
AMI (American Megatrends, Inc.) BIOS
DEL (older: CTRL+ALT+ESC)
DTK (Datatech Enterprises Co.) BIOS
DEL (older: CTRL+ALT+ESC, CTRL+ALT+S, CTRL+ALT+INS, CTRL+S)
Computer Vendor/Manufacturer
Keyboard Commands used to access BIOS
Acer (Aspire, Power,Verition, Extensa, Ferrari, TravelMate,
Altos)
CTRL+ALT+ESC, CTRL+ALT+DEL
CTRL+ALT+ESC, CTRL+ALT+DEL
Compaq (Presario, Prolinea, Deskpro, Systempro, Portable)
Dell (XPS, Inspiron, Precision, Vostro)
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