diff -urN udisks-2.1.2.orig/src/udiskslinuxdevice.c udisks2-2.1.2/src/udiskslinuxdevice.c
--- udisks-2.1.2.orig/src/udiskslinuxdevice.c	2012-11-23 06:43:55.000000000 +0100
+++ udisks2-2.1.2/src/udiskslinuxdevice.c	2014-01-19 01:53:30.000000000 +0100
@@ -199,6 +199,7 @@
     {
       /* ATA8: 7.16 IDENTIFY DEVICE - ECh, PIO Data-In */
       input.command = 0xec;
+      input.count = 1;
       output.buffer = g_new0 (guchar, 512);
       output.buffer_size = 512;
       if (!udisks_ata_send_command_sync (fd,
@@ -221,6 +222,7 @@
     {
       /* ATA8: 7.17 IDENTIFY PACKET DEVICE - A1h, PIO Data-In */
       input.command = 0xa1;
+      input.count = 1;
       output.buffer = g_new0 (guchar, 512);
       output.buffer_size = 512;
       if (!udisks_ata_send_command_sync (fd,
diff -urN udisks-2.1.2.orig/src/udiskslinuxdriveata.c udisks2-2.1.2/src/udiskslinuxdriveata.c
--- udisks-2.1.2.orig/src/udiskslinuxdriveata.c	2013-01-08 13:07:23.000000000 +0100
+++ udisks2-2.1.2/src/udiskslinuxdriveata.c	2014-01-19 01:53:30.000000000 +0100
@@ -1943,7 +1943,7 @@
   /* First get the IDENTIFY data directly from the drive, for sanity checks */
   {
     /* ATA8: 7.16 IDENTIFY DEVICE - ECh, PIO Data-In */
-    UDisksAtaCommandInput input = {.command = 0xec};
+    UDisksAtaCommandInput input = {.command = 0xec, .count = 1};
     UDisksAtaCommandOutput output = {.buffer = identify.buf, .buffer_size = sizeof (identify.buf)};
     if (!udisks_ata_send_command_sync (fd,
                                        -1,