jibel If you don't want to replace any of the other Operating Systems already installed on your HDD, you will need to manually create a partition for solus, since you are using gnome you will need to use
gparted, it is already installed on your live-media:
- Launch it before the installer and create a new ext4 partition for solus, if you don't have free space, you'll need another HDD or create free space removing/resizing another partition, resizing is dangerous if you are not using
- It has to be more than 10GiB in size, and if you are an advanced user, you can create another partition for your
- After creating the partition, you'll be able to install it without disrupting another O.S. installed;
- You'll need to select the bootloader on installer, you probably already has one since you have ubuntu installed, just select it, Bootloader is not ext4, it is FAT, you'll see it.
Something else, take a screenshot and ask, we will guide you through this sea!