If I have large disk (2TB+) then I should use GPT over MBR, but in this case I have to manually create special partition (ESP partition) with flag boot mounted to /boot/efi with size of 512 MB and formatted in FAT32 fle system. (if I am wrong in any part please correct me).
So why can’t graphical installer do it for me with one click?
Boot into your firmware. Disable CSM if possible. Within your firmware menu you usually can select to directly boot the Manjaro ISO stick, there should be two entries at least, one entry with UEFI in front, that’s the way to boot the ISO in EFI mode. Only when booting in EFI mode you also can install Manjaro in EFI mode to your disk.
I am already on Manjaro XFCE right now. I just want to switch to KDE. So I am not absolute beginner.
Before Manjaro I even used to work in pure Arch, but I tired very quickly when you have to read tons of manuals and then manually edit tons of config files in order to make simple things work. It’s like working with atoms in order to build something big.
So decided to stay on Arch base but to look for more user-friendly distro, that’s how I knew about Manjaro.
I like Manjaro for 3 reasons
It’s rolling release distro like Arch. I don’t like to wait a year so I can update my apps.
It’s much more user-friendly unlike Arch.
Apps in repo are tested before being uploaded unlike Arch when you can install some buggy stuff.
But I don’t know in details hardware things like UEFI+GPT, BIOS+MBR.