I have Win7 on my laptop with two partitions (C and D). I want to install Ubuntu 18.04 LTS, and I don't need those separate partitions - I just need a whole HDD for my Ubuntu (and I know it's nice to have separate partitions for /home
etc., but I don't really need that right now and I'm not an advanced Linux user yet). Can I just choose 'Erase disk and install Ubuntu' to "melt" my partitions together? Or I have to mess with 'Something else' option (I'd really love to avoid it for now)?
UPD: Suggested duplicate is wrong, because my question is specific about managing partiotions. The answer below solved my problem. Right now I'm writing from my fresh Ubuntu. Indeed, you can simply choose 'Erase disk and install Ubuntu'.