Recently someone asked me to install elementary OS on their laptop, because they would like to get into Linux. I myself use Ubuntu and never had any problems installing it on my laptop/computer but here i ran into a problem, possibly not the OS's fault though.
So the laptop is a few years old and it came with Windows 10 preinstalled. When I start the install process I can connect to the internet, select keyboard layout and language but then a window pops up where I should select a partition to install elementary on it. I guess, because I cannot choose any partition, for ex: delete Windows 10 and replace it with Elementary OS.
I searched online and I came to a basic conclusion that this is because of the hardrive (?) which is GPT not MBR. After running a terminal command it shows GPT is the default and MBR is "protective", whatever that means. Sorry if this is not a professional way to say it, I've never encountered this before and anyway I just use Ubuntu on a simple daily basis, so I'm pretty new too.
My question is, is there a way I can change something in the BOOT menu on the computer or should I run some commands in terminal to change it from GPT to MBR?
Any help is appreciated, thanks in advance.