Start working on FAT formatter

BadBuilder.Formatter/FAT32Utilities.cs

@@ -0,0 +1,28 @@
+namespace BadBuilder.Formatter
+{
+    static class FAT32Utilities
+    {
+        internal static uint GetVolumeID()
+        {
+            DateTime now = DateTime.Now;
+
+            ushort low = (ushort)(now.Day + (now.Month << 8));
+            low += (ushort)((now.Millisecond / 10) + (now.Second << 8));
+
+            ushort hi = (ushort)(now.Minute + (now.Hour << 8));
+            hi += (ushort)now.Year;
+
+            return (uint)(low | (hi << 16));
+        }
+
+        internal static uint CalculateFATSize(uint diskSize, uint reservedSectorCount, uint sectorsPerCluster, uint numberOfFATs, uint bytesPerSector)
+        {
+            const ulong fatElementSize = 4;
+
+            ulong numerator = fatElementSize * (diskSize - reservedSectorCount);
+            ulong denominator = (sectorsPerCluster * bytesPerSector) + (fatElementSize * numberOfFATs);
+
+            return (uint)((numerator / denominator) + 1);
+        }
+    }
+}