diff --git a/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Hardware/Disk/NECUPD765.FDC.cs b/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Hardware/Disk/NECUPD765.FDC.cs
index f3e946342d..f1b2f63274 100644
--- a/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Hardware/Disk/NECUPD765.FDC.cs
+++ b/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Hardware/Disk/NECUPD765.FDC.cs
@@ -480,6 +480,9 @@ namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
                                 ExecBuffer[buffPos++] = sector.ActualData[i];
                             }
 
+                            // mark the sector read
+                            sector.SectorReadCompleted();
+
                             // any CRC errors?
                             if (Status1.Bit(SR1_DE) || Status2.Bit(SR2_DD))
                             {
@@ -806,6 +809,9 @@ namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
                                     ExecBuffer[buffPos++] = sector.ActualData[i];
                                 }
 
+                                // mark the sector read
+                                sector.SectorReadCompleted();
+
                                 if (sector.SectorID == ActiveCommandParams.EOT)
                                 {
                                     // this was the last sector to read
@@ -1044,6 +1050,9 @@ namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
                                 ExecBuffer[buffPos++] = sec.ActualData[b];
                             }
 
+                            // mark the sector read
+                            sec.SectorReadCompleted();
+
                             // end of sector - compare IDs
                             if (sec.TrackNumber != ActiveCommandParams.Cylinder ||
                                 sec.SideNumber != ActiveCommandParams.Head ||
diff --git a/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Hardware/Disk/NECUPD765.FDD.cs b/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Hardware/Disk/NECUPD765.FDD.cs
index 5cf84876f5..0d79ee1bed 100644
--- a/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Hardware/Disk/NECUPD765.FDD.cs
+++ b/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Hardware/Disk/NECUPD765.FDD.cs
@@ -857,7 +857,7 @@ namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
 
                 #endregion
 
-                #region StateSerialization
+            #region StateSerialization
 
             public void SyncState(Serializer ser)
             {
diff --git a/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Media/Disk/FloppyDisk.cs b/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Media/Disk/FloppyDisk.cs
index c84c739a14..6aa6dc8d06 100644
--- a/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Media/Disk/FloppyDisk.cs
+++ b/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Media/Disk/FloppyDisk.cs
@@ -636,6 +636,14 @@ namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
             public byte[] SectorData { get; set; }
             public bool ContainsMultipleWeakSectors { get; set; }
 
+            public int WeakReadIndex = 0;
+
+            public void SectorReadCompleted()
+            {
+                if (ContainsMultipleWeakSectors)
+                    WeakReadIndex++;
+            }
+
             public int DataLen
             {
                 get
@@ -681,6 +689,20 @@ namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
                     }
                     else
                     {
+                        // weak read neccessary
+                        int copies = ActualDataByteLength / (0x80 << SectorSize);
+
+                        // handle index wrap-around
+                        if (WeakReadIndex > copies - 1)
+                            WeakReadIndex = copies - 1;
+
+                        // get the sector data based on the current weakreadindex
+                        int step = WeakReadIndex * (0x80 << SectorSize);
+                        byte[] res = new byte[(0x80 << SectorSize)];
+                        Array.Copy(SectorData, step, res, 0, 0x80 << SectorSize);
+                        return res;
+
+                        /*
                         int copies = ActualDataByteLength / (0x80 << SectorSize);
                         Random rnd = new Random();
                         int r = rnd.Next(0, copies - 1);
@@ -688,6 +710,7 @@ namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
                         byte[] res = new byte[(0x80 << SectorSize)];
                         Array.Copy(SectorData, step, res, 0, 0x80 << SectorSize);
                         return res;
+                        */
                     }
                 }
             }