I want to have install Linux on a machine with windows. For dual boot, I want to use UNetbootin, which only show me the option to install the iso in drive C. The point is:
1) My drive C is almost full (115/118gb)
2) I have more 3 empty drives with 300gb.
3) I am considering 35gb for Linux.
If I clean and transfer all my files and backups from drive C, I got 15gb in free space but still not enough for Ubuntu 18. I would like to know, which other files (among program and system files) I could move from the default drive C? Any suggestion?