/// <summary>
/// Returns the highest sector in use by the ISO9660 image. This method assumes that this sector will be in use by a <see cref="FileSector"/>.
/// </summary>
/// <returns>The highest sector used by the image.</returns>
public UInt32 GetHighestSectorUsed()
{
var lastsectoritem = SectorMap.Last();
if (lastsectoritem.Value is FileSector file)
{
var lastsectorused = lastsectoritem.Key + (MathUtil.RoundUp(file.Record.DataLength, (UInt32)DefaultSectorSize) / DefaultSectorSize);
return((UInt32)lastsectorused);
}
throw new Exception();
}
