Linux differs from Windows with creating just a single directory tree for all partitions.
Request all mount points
user@DeveloperVM:~$ df -aTh Filesystem Type Size Used Avail Use% Mounted on sysfs sysfs 0 0 0 - /sys proc proc 0 0 0 - /proc udev devtmpfs 3,9G 0 3,9G 0% /dev ... tmpfs tmpfs 799M 9,1M 790M 2% /run /dev/sda5 ext4 48G 5,5G 40G 13% / ... /dev/sda1 ext4 1,9G 118M 1,7G 7% /boot /dev/sdc1 ext4 99G 24G 70G 26% /home ...
Find mount point of file/directory
user@DeveloperVM:~$ df -Th /bin Filesystem Type Size Used Avail Use% Mounted on /dev/sda5 ext4 48G 5,5G 40G 13% /
user@DeveloperVM:~$ df -Th /home/user/Documents/file.txt Filesystem Type Size Used Avail Use% Mounted on /dev/sdc1 ext4 99G 24G 70G 26% /home