diff --git a/src/disk/hdc_esdi_mca.c b/src/disk/hdc_esdi_mca.c
index c906c7ca1..60cdf7583 100644
--- a/src/disk/hdc_esdi_mca.c
+++ b/src/disk/hdc_esdi_mca.c
@@ -188,6 +188,7 @@ typedef struct esdi_t {
 #define CMD_READ_VERIFY            0x03
 #define CMD_WRITE_VERIFY           0x04
 #define CMD_SEEK                   0x05
+#define CMD_PARK_HEADS             0x06
 #define CMD_GET_DEV_STATUS         0x08
 #define CMD_GET_DEV_CONFIG         0x09
 #define CMD_GET_POS_INFO           0x0a
@@ -605,6 +606,35 @@ esdi_callback(void *priv)
             }
             break;
 
+        case CMD_PARK_HEADS:
+            ESDI_DRIVE_ONLY();
+
+            if (!drive->present) {
+                device_not_present(dev);
+                return;
+            }
+
+            switch (dev->cmd_state) {
+                case 0:
+                    dev->rba = 0x00000000;
+                    cmd_time = hdd_seek_get_time(&hdd[drive->hdd_num], dev->rba, HDD_OP_SEEK, 0, 0.0);
+                    esdi_mca_set_callback(dev, ESDI_TIME + cmd_time);
+                    dev->cmd_state = 1;
+                    break;
+
+                case 1:
+                    complete_command_status(dev);
+                    dev->status          = STATUS_IRQ | STATUS_STATUS_OUT_FULL;
+                    dev->irq_status      = dev->cmd_dev | IRQ_CMD_COMPLETE_SUCCESS;
+                    dev->irq_in_progress = 1;
+                    set_irq(dev);
+                    break;
+
+                default:
+                    break;
+            }
+            break;
+
         case CMD_GET_DEV_STATUS:
             ESDI_DRIVE_ONLY();