diff --git a/libisoburn/burn_wrap.c b/libisoburn/burn_wrap.c
index b820b9ec..b6fd1687 100644
--- a/libisoburn/burn_wrap.c
+++ b/libisoburn/burn_wrap.c
@@ -1070,7 +1070,7 @@ int isoburn_read_iso_head(struct burn_drive *d, int lba,
 {
  unsigned char buffer[64*1024];
  int ret, info_mode, capacity, role;
- off_t data_count;
+ off_t data_count, to_read;
 
  info_mode= flag&255;
  *image_blocks= 0;
@@ -1085,11 +1085,15 @@ int isoburn_read_iso_head(struct burn_drive *d, int lba,
      capacity = 0x7ffffff0;
      ret = 1;
    }
-   if(ret > 0 && (off_t) capacity * (off_t) 2048 >= (off_t) (64 * 1024)) {
+   memset(buffer, 0, 64 * 1024);
+   to_read= capacity * 2048;
+   if(ret > 0 && to_read >= (off_t) (36 * 1024)) {
+     if(to_read >= (off_t) (64 * 1024))
+       to_read= 64 * 1024;
      ret = burn_read_data(d, ((off_t) lba) * (off_t) 2048, (char *) buffer,
-                      (off_t) 64*1024, &data_count, 2); /* no error messages */
-  } else
-    ret= 0;
+                      to_read, &data_count, 2); /* no error messages */
+   } else
+     ret= 0;
    if(ret<=0)
      return(-1*!!(flag&(1<<15)));
    if(info_mode==2)
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index 017c23a8..e37e04ac 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2010.03.30.082405"
+#define Xorriso_timestamP "2010.04.01.140653"