Then Fedora 13 system installer start formatting and creating filesystem on your system hard disk. The screenshot below show that the Fedora 13 formatting and put filesystem on the /dev/sda1 the first portion on the first hard disk on the system...
Fedora 13 Formatting Filesystem
Creating ext4 filesystem on /dev/sda1.
Action: The formatting process may take some time to finish depending on the size of partition. Just wait until the process finish