Problem during installation


during installation Seafile when I have to select where to install Seafile gotta error prompt “Installation disk must have to be a local hard disk” or something simillar to that, cuz its prompting on my co-worker computer and I dont have password for his computer.
Thats single partition C:/ where is System installed.
Is there any solution for this, or this is problem with system and I have should reinstall system.