Index: drivers/storage/ide/uniata/id_ata.cpp
===================================================================
--- drivers/storage/ide/uniata/id_ata.cpp	(revision 69239)
+++ drivers/storage/ide/uniata/id_ata.cpp	(working copy)
@@ -6281,6 +6281,15 @@
                     interruptReason,
                     statusByte));
 
+        if(g_opt_VirtualMachine == VM_QEMU) {
+            if(interruptReason == ATAPI_IR_IO_toDev && !(statusByte & IDE_STATUS_DRQ) && !DmaTransfer) {
+                statusByte = WaitForDrq(chan);
+                if(statusByte & IDE_STATUS_DRQ) {
+                    goto continue_PIO;
+                }
+            }
+        }
+
         if(OldReqState == REQ_STATE_DPC_WAIT_BUSY0 &&
            AtaReq->WordsLeft == 0) {
             KdPrint2((PRINT_PREFIX "AtapiInterrupt: pending WAIT_BUSY0. Complete.\n"));
Index: drivers/storage/ide/uniata/id_sata.cpp
===================================================================
--- drivers/storage/ide/uniata/id_sata.cpp	(revision 69239)
+++ drivers/storage/ide/uniata/id_sata.cpp	(working copy)
@@ -2206,12 +2206,16 @@
     UniataAhciWriteChannelPort4(chan, IDX_AHCI_P_CI, 0x01 << tag);
     chan->AhciPrevCI |= 0x01 << tag;
 
-    KdPrint2(("  Send CMD START\n"));
-    UniataAhciWriteChannelPort4(chan, IDX_AHCI_P_CMD,
-        CMD |
-        ATA_AHCI_P_CMD_ST |
-        ((chan->ChannelCtrlFlags & CTRFLAGS_AHCI_PM) ? ATA_AHCI_P_CMD_PMA : 0));
-    UniataAhciReadChannelPort4(chan, IDX_AHCI_P_CMD); /* flush */
+    CMD0 = CMD;
+    CMD |= ATA_AHCI_P_CMD_ST |
+          ((chan->ChannelCtrlFlags & CTRFLAGS_AHCI_PM) ? ATA_AHCI_P_CMD_PMA : 0);
+    if(CMD != CMD0) {
+      KdPrint2(("  Send CMD START\n"));
+      UniataAhciWriteChannelPort4(chan, IDX_AHCI_P_CMD, CMD);
+      UniataAhciReadChannelPort4(chan, IDX_AHCI_P_CMD); /* flush */
+    } else {
+      KdPrint2(("  No CMD START, already active\n"));
+    }
 
     if(!ATAPI_DEVICE(chan, DeviceNumber)) {
         // TODO: check if we send ATAPI_RESET and wait for ready of so.
Index: drivers/storage/ide/uniata/uniata_ver.h
===================================================================
--- drivers/storage/ide/uniata/uniata_ver.h	(revision 69239)
+++ drivers/storage/ide/uniata/uniata_ver.h	(working copy)
@@ -1,10 +1,10 @@
-#define UNIATA_VER_STR         "45h1"
-#define UNIATA_VER_DOT         0.45.8.1
+#define UNIATA_VER_STR         "45h3"
+#define UNIATA_VER_DOT         0.45.8.3
 #define UNIATA_VER_MJ          0
 #define UNIATA_VER_MN          45
 #define UNIATA_VER_SUB_MJ      8
-#define UNIATA_VER_SUB_MN      1
-#define UNIATA_VER_DOT_COMMA   0,45,8,1
-#define UNIATA_VER_DOT_STR     "0.45.8.1"
+#define UNIATA_VER_SUB_MN      3
+#define UNIATA_VER_DOT_COMMA   0,45,8,3
+#define UNIATA_VER_DOT_STR     "0.45.8.3"
 #define UNIATA_VER_YEAR        2015
 #define UNIATA_VER_YEAR_STR    "2015"