Download
AngoraOS.

Back up your files

Installing erases the disk you choose. Copy important files to another disk or the cloud. Do this even if you are installing alongside Windows.

Download and verify the ISO

Download angoraos-0.6.1-mark6.iso, then run the SHA‑256 check below. If the checksum does not match, do not use the file.

Write it to a USB stick

Copying the ISO onto the stick is not enough; it has to be “written” with a tool. Rufus on Windows and balenaEtcher on Windows, macOS and Linux are common choices. If Rufus asks how to write the image, choose “DD Image”. The stick must be at least 16 GB; everything on it is erased.

Using Ventoy? It works with Secure Boot off. With Secure Boot on, Ventoy does not recognise AngoraOS’s signature: even after you enroll the key, startup returns to the same enrollment screen. Write the stick with Rufus or balenaEtcher instead; the key you enrolled stays on the computer, so you do not need to enroll it again.

Boot the computer from the stick

Insert the stick, press the boot menu key while the computer starts (F12, F9, F8 or Esc on most machines) and pick the USB stick. You do not need to turn Secure Boot off.

If Secure Boot is on: enroll the key once

On first boot a short explanation appears. Press Esc and a blue screen opens; press any key within 10 seconds, then choose “Enroll key from disk” → ANGORA_EFI → EFI → angora → angora-guvenli-acilis.der → “Continue” → “Yes” → “Reboot”. When the computer restarts AngoraOS starts, and you will not be asked again. Secure Boot, BitLocker and Windows stay as they are. If ANGORA_EFI does not appear on the blue screen, the same file is also on the install stick’s own disk: EFI → angora → angora-guvenli-acilis.der. If the same screen comes back after enrolling, check which tool you used to write the stick (see the Ventoy note above).

Try or install

“Try without installing” runs the system from the stick without touching your computer. If you like it, choose “Install AngoraOS”, and turn on disk encryption if you wish.