UEFI Secure Boot
Some modern computers use new advanced UEFI x64 secure boot approach instead of the standard BIOS boot.
Active@ LiveCD fully supports UEFI secure boot on 64-bit systems, and will boot up the machine automatically.
In case any malfunctions with UEFI secure boot (if your machine does not boot after you set up boot priority as it is described above), you should check that BIOS boot is enabled (Legacy mode), or UEFI is disabled.
Here is how you can check your BIOS settings.
At the moment of turning your computer on, you will see an option to enter SETUP. Depending on the manufacturer of your system, you can press the UEFI Access Key to access the system UEFI. If you are not sure, consult the User Guide that came with your computer or call the manufacturer's technical support for assistance.
The following table provides UEFI access key references for modern manufacturers:
| Manufacturer | UEFI Access Key | Notes |
|---|---|---|
| Dell | F2 | Press repeatedly immediately after power-on |
| HP (Hewlett-Packard) | F10 or Esc | Press Esc first, then F10 for Setup |
| Lenovo (ThinkPad) | F1 | Press repeatedly immediately after power-on |
| Lenovo (IdeaPad) | F2 or Fn+F2 | |
| ASUS | F2 or Del | Press repeatedly immediately after power-on |
| Acer | F2 or Del | May require disabling Fast Boot first |
| MSI | Del | Press repeatedly immediately after power-on |
| Gigabyte | F2 or Del | Press repeatedly immediately after power-on |
| ASRock | F2 or Del | |
| Samsung | F2 | |
| Microsoft Surface | Volume Down + Power button | Hold both buttons simultaneously |
| Apple (Boot Camp) | Option key | Hold during startup |
If the UEFI settings screen cannot be accessed using the key press method, it is recommended to disable Fast Boot or Fast Startup in the operating system power settings before attempting again. On some systems, Secure Boot must also be disabled before changes to the boot device priority can be saved.
Once in your system BIOS, look under the Boot menu to find an option that says "UEFI/BIOS Boot Mode" or "UEFI Boot". In the case of "UEFI/BIOS Boot Mode" switch the mode from "UEFI" to "Legacy" mode.
If you see "UEFI Boot", switch the option from "Enabled" to "Disabled". Be sure to save your BIOS changes and exit to reboot your computer. You should now be able to boot up from Active@ LiveCD.