I have a following scenario:
My Laptop has a 3 OS installed: Windows (Gaming), Personal Linux, Work Linux. I had this separation for numerous reasons, like wanting to play all the games I own (Windows), having a separate stable setup for work (VERY important) and thirdly to have a linux I can play with. I always follow this pattern as my playfulness is rerely well received by my computers I tend to break things quite often and sometimes get bored and install something new, different distro or OS altogether. And this is the case this time, I want to remove existing Personal Linux OS and replace it with Antergos. In past days, when BIOS ruled this was quite easy for me, I had done this many times and had all my bases covered. But this time it is EFI, so it is still a bit new to me.
I already have a working reFind installed, BIOS/EFI settings adjusted so everything boots well. I have tried to install Antergos, disabled GRUB and mounted partition from my previous Personal setup. However, I have noticed that when setting mount point for EFI partition Cnchi says that this partition will be modified. Does that mean that Cnchi will overwrite everything or make extensive modifications? What Cnchi would do to my EFI?
My initial assessment is that some files required for proper booting of Antergos will be added to this partition and other exisiting installations will not be affected, but I wanted to ask before going any further and potentially destroying other OS (I don;t really care about Windows, but losing Work Linux would be disastrous).