Cant install Mint or Studio as dual-boot?

[1bit]

Hi,




Im completely new to linux (other than trying a live cd), Ive been trying to install Linux Mint (on my dads PC) and Ubuntu Studio (on my PC) alongside Windows 10 following instructions on various web-pages...where I get stuck is when it tells me to select the FREE SPACE on the windows drive, it does not display the free space on the drives, it does show 2 lots of free space as 0MB and 1MB on the windows drive on both mine and my dads PC's - two seperate installations/instructions and exactly the same issues?




all I can do is install it directly as a lone OS on a drive, Iam a noob and unfamiliar with linux partitioning etc




can anyone help me install linux alongside windows 10?




 




thanks