Trying to install Windows 10 but don't have room on SSD

Docoppolis

Prominent
Jul 18, 2017
2
0
510
So basically something happened and i have been put in a "automatic repair boot loop" on my pc. I have tried all forms of troubleshooting and talking to Microsoft support. But that's not the issue here. I've come to the conclusion that I need to reinstall Windows 10 onto my pc. When I boot through the flash drive with the bootable ISO file of Windows and go to the custom installation, I can't install on any partition. Now I want to install Windows on my SSD but that doesnt have enough space. I was told it just replaces the current Windows files that I have so I don't know why it wouldn't be able to install. Maybe someone could explain that to me but what I'm here to ask for help on it should I format or delete partitions or is that wrong entirely. Any help is greatly appreciated!