F17 won't install -- not enough space error, drive is 200 GB though

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http://forums.fedoraforum.org – Hello: I'm trying to install 64 bit F17 on my laptop. I will eventually dual boot. I have Win 7 installed on a partition and have 220 GB of unallocated space outside of the NTFS partition. During install, when I get to the part where it gives me options for the disk, I selected the use free space option and the custom config option. Neither one worked. In all instances, I get an error stating there is not enough space on the drive. There's 220 GB available. How can I possible not have enough space? Thanks for any suggestions you can provide! (HowTos)