1 files changed, 1 insertions, 0 deletions
diff --git a/hw/block/fdc.c b/hw/block/fdc.c
index a64378f84b..77af9979de 100644
--- a/hw/block/fdc.c
+++ b/hw/block/fdc.c
@@ -2648,6 +2648,7 @@ static void fdctrl_realize_common(DeviceState *dev, FDCtrl *fdctrl,
 
     FLOPPY_DPRINTF("init controller\n");
     fdctrl->fifo = qemu_memalign(512, FD_SECTOR_LEN);
+    memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
     fdctrl->fifo_size = 512;
     fdctrl->result_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
                                              fdctrl_result_timer, fdctrl);