byte[] zero = new byte[16] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

// sprawdzanie, czy za zerami jest ramdisk czy pozostalosc zImage
                fs.Seek(boz_offset, SeekOrigin.Begin); //boz (bunch of zeroes)
                byte[] tmp = new byte[2];
                byte[] gz_magic = new byte[2] { 0x1F, 0x8B };
                int after_zero_offset = boz_offset;
                int last_offset = 0;//Convert.ToInt32(fs.Position);
                int check_cycle = 1;

                do
                {
                    if (last_offset == after_zero_offset)
                    {
                        do
                        {
                            fs.Read(read_bytes, 0, 16);
                            if (read_bytes.SequenceEqual(zero))
                            {
                                last_offset = boz_offset;
                                break;
                            }
                            boz_offset = last_offset + 16;
                            fs.Seek(boz_offset, SeekOrigin.Begin);
                        }
                        while (!read_bytes.SequenceEqual(zero));
                    }
                    do
                    {
                        fs.Read(read_bytes, 0, 16);
                        if (!read_bytes.SequenceEqual(zero))
                        {
                            last_offset = after_zero_offset;
                            break;
                        }
                        if (check_cycle == 1)
                        {
                            after_zero_offset = after_zero_offset + 16;
                        }
                        else
                        {
                            after_zero_offset = last_offset + 16;
                        }
                        fs.Seek(after_zero_offset, SeekOrigin.Begin);
                    }
                    while (read_bytes.SequenceEqual(zero));

                    fs.Seek(last_offset, SeekOrigin.Begin);
                    fs.Read(tmp, 0, 2);

                    check_cycle = check_cycle + 1;
                }
                while (!tmp.SequenceEqual(gz_magic));