I’m experimenting with a 2014 macbook pro upgraded to macOS 14.4 (Sonoma) with OpenCore Legacy Patcher, Linux Mint 21.3 Virginia and Linux Mint 21.3 Xfce.
First, I installed Linux Mint 21.3 Virginia and I could boot both to macOS and Mint. Then, I created another partition and installed Mint Xfce on it.
Now, I can only access both linux operative systems and macOS has disappeared.
What I don’t understand is why now the notebook boots directly to grub instead of booting to OpenCore Legacy Patcher
OSX doesn’t seem to play nice with linux dual booting. I think holding the option key while booting should force the apple boot menu to show, at least it did when i tried.
You can always chainload bootloaders and have grub or refind pick the linux os
OP is using OpenCore Legacy Patcher to run an newer OS on an unsupported machine. The option boot menu won’t work, they’d need to get back to the OCLP menu to boot Mac OS.