Linux on Mac
Linux on Mac
Reduce the partition size in OS X, then start from the live disk and install. It should be simple.
It's achievable and fairly simple, matching what @Electronics Wizardy mentioned. However, every Mac comes with a secured bootloader, even though full UEFI is supported. You must start in safe mode and clear the protection (referred to as SIP or System Integrity Protection). This can cause bootloader installation issues unless you turn it off. I believe most recent Linux setups should manage to bypass SIP during installation and set up the bootloader properly. This might explain @JayKay3000's issue. Occasionally, a bigger OS X upgrade will reset the bootloader. It’s wise to learn early how to boot into your Linux install and reinstall it (just the bootloader) when needed. I suggest using rEFInd or a similar boot manager. Check the details on SIP for more guidance.
Additionally, when using a MacBook Pro or Air, keep these factors in mind: Not every distribution includes wireless drivers on the installation media (though they are available) Backlight adjustment can be challenging The Nouveau driver may or may not function, and NVidia can pose difficulties (on my MBP 5.5, no backlight in VCs across the Linux distributions I've tried, and Nouveau frequently crashes) The touchpad performance lags behind OS X (or: in fact, OS X gestures are exceptional; no one has matched them on Windows or Linux). It can be adjusted, but nothing rivals the OS X gestures OOTB. EDIT: A key consideration is that some Linux bootloaders—like GRUB 2—might fail to recognize OS X (this was a while ago, improvements possible). This could lead to the MacBook booting into Linux without an OS X option. That’s why I opted for rEFInd (it looks good, it was straightforward at first, though later I learned how to integrate OS X into GRUB).
For alternatives to using a live CD, check this guide: https://www.howtogeek.com/187410/how-to-...-on-a-mac/