You may view your hard drive in Disk Management and see unallocated space. The space will be on the hard drive, but Windows cannot use it. It is like having a spare room in your house but locked off.

Synaptic vesicle docking and fusion are mediated by the assembly of a stable SNARE core complex of proteins, which include the synaptic vesicle membrane protein VAMP/synaptobrevin and the plasmalemmal ...