private Directory CreateSystemDirectory(long mftIndex)
{
FileRecord fileRec = _context.Mft.AllocateRecord((uint)mftIndex, FileRecordFlags.None);
fileRec.Flags = FileRecordFlags.InUse | FileRecordFlags.IsDirectory;
fileRec.SequenceNumber = (ushort)mftIndex;
Directory dir = new Directory(_context, fileRec);
StandardInformation.InitializeNewFile(dir, FileAttributeFlags.Hidden | FileAttributeFlags.System);
dir.CreateIndex("$I30", AttributeType.FileName, AttributeCollationRule.Filename);
dir.UpdateRecordInMft();
return dir;
}