I recently bought a laptop with free dos because I already had a version of Win 8.1. after installing the OS, While repartitioning the Hard Drive, I discovered two unallocated 7.80GB (one NTFS and one FAT32, See image) portion other than the four partitions I had created. But when I try to extend the C: drive partition, no unallocated space shows up. What is this problem? How can i merge that 7.80GB into my useable quota! Also, what is that FAT32 space (in orange color), is that useable?