Hello Eugenai! Thank you for your question. I am a licensed computer professional with over ten years of experience, and I will be assisting you today.
Please try each of the followings if available and until it ejects:
- Can you press the Eject button, if there is one, on the keyboard?
- Can you open iTunes program, then click on Control option on the top, then click on Eject Disc?
- Shut down the computer and then start it back up while holding down the mouse button. This may take some time, but keep your finger on the mouse button right up until the disc comes out or the log-in screen has appeared.
- If your computer has an eject button on the keyboard, restart the computer holding down the Option key. When the startup disk selection screen appears, let go of the option key and press the keyboard's eject button.
Please let me know if there is still any issue. Thank you.