public static void FillAllocatedSpaceWithData(DiskImage disk, long startSector, long sectorCount, ref long bytesWritten)
{
const int DirectTransferSizeLBA = 2048; // 1 MB (assuming 512-byte sectors)
byte[] data = new byte[DirectTransferSizeLBA * disk.BytesPerSector];
Random random = new Random();
long sectorIndex = startSector;
while (sectorIndex < startSector + sectorCount)
{
long sectorsToWrite = startSector + sectorCount - sectorIndex;
if (sectorsToWrite < DirectTransferSizeLBA)
{
data = new byte[sectorsToWrite * disk.BytesPerSector];
}
random.NextBytes(data);
disk.WriteSectors(sectorIndex, data);
sectorIndex += DirectTransferSizeLBA;
bytesWritten += data.Length;
}
}