Which Windows is it? 7 or 8? Makes a big difference because Windows 8 will come installed in UEFI and with Secure Boot enabled. Windows 7 will (almost always) come installed in Legacy (CSM or BIOS) mode. The answer determines the next steps to setting up the dual boot. Can you boot into a Fedora Live media and post the output of sudo fdisk -l
? That will give us the information we need to help you.
I have a suspicion (though I can't be certain until after we know your partition layout) that you have Windows 7 installed in Legacy mode. This means you have an MBR disk. And you're trying a Standard Partitioning for installing Fedora, yes? Fedora tries to group the /
, /home
, and swap
partitions on an extended partition and creates a separate primary partition for /boot
. It might not install if you already have 3 or 4 primary partitions. You can only have 4 primary partitions in an MBR disk. If you have 3 primary partitions, try LVM partitioning instead. I have never used it but I think it will create only 1 primary partition. Or maybe somebody else has another way to do this. It's all speculation at this point. We need your current partition layout to help you effectively.
Can you please take a picture of installation area where you get the error and post it here so we can help?
How are you trying to do this? Are you installing from a usb or cd or by netinst? Does Fedora recognize free space?
If you're installing with Anaconda, first boot from the live media and use Disk Utility to clear\unallocate the disk space you want to use.