[Qemu-devel] [PATCH v3 1/4] fdc: fix implied seek while there is no medina in drive

[Pavel Hrdina <phrdina@redhat.com>]

The Windows uses 'READ' command at the start of an instalation
without checking the 'dir' register. We have to abort the transfer
with an abnormal termination if there is no media in the drive.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
---
 hw/fdc.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/hw/fdc.c b/hw/fdc.c
index 30d34e3..096aefc 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -159,6 +159,9 @@ static int fd_seek(FDrive *drv, uint8_t head, uint8_t track, uint8_t sect,
         drv->sect = sect;
     }
 
+    if (drv->bs == NULL || !bdrv_is_inserted(drv->bs))
+        ret = 2;
+
     return ret;
 }
 
-- 
1.7.7.6