There is no "the hackintosh" as hackintosh refers to the installation of Apple's Mac OS X on non-Apple hardware. There will be many variations depending on the computer being used. Not all features will be replicated on a non-Apple computer.
no, notebooks normally can't or it will be really difficult to make in to a hackintosh
The eject button on the keyboard above the Delete key, that is if you're using an Apple or Apple compatible keyboard. You can also eject a disk by pressing the [command ⌘] or [Apple ] key, located next to the space bar and simultaneously pressing the E key. You can also eject a disk by selecting File-> Eject from within in the Finder. Clicking anywhere on the empty desktop will activate the Finder and you can then select Eject (File->Eject) from the File menu that is located on the top left of your screen next to the Apple  icon.
You have given no setup. Anyway, hackintosh is bad, and nobody should use it. It might be illegal, too.
a hackintosh is just a normal pc set up to run mac, most pc's run linux fine.
On a Mac, providing the CD is not stuck, you can press the Eject key or right click on the disc's icon and select Eject from the menu that appears or you can drag the icon to the trash and it will eject the CD for you. If the CD has opened in iTunes you simply click the eject symbol next to the CD's name.
On an iMac, there isn't a dedicated physical eject button like on some other devices. Instead, you can eject a disc by clicking the Finder icon, selecting the disc from the sidebar, and then clicking the eject icon next to it. Alternatively, you can press Command (⌘) + E on your keyboard to eject the selected disc. If you have a keyboard with an eject key, it may also serve this purpose.
Press the "eject" key which is the foremost upper right key on the key pad.
Click the link.
Push "Eject" - top row of buttons on the radio- far right button. Ignition/key does not have to be on to "eject" the CD.
On a hackintosh?
Building and using a Hackintosh computer, which is a non-Apple computer running macOS, is not legal according to Apple's End User License Agreement. Apple restricts macOS to only run on Apple-branded hardware. Therefore, creating a Hackintosh violates Apple's terms and conditions.
Building a hackintosh requires a wide range of components which may well include a Mac upgrade disc but this alone is not enough.