1 files changed, 1 insertions, 1 deletions
diff --git a/qemu-img.c b/qemu-img.c
index 070fe2e..204f618 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -530,7 +530,7 @@ static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum)
     return v;
 }
 
-#define IO_BUF_SIZE 65536
+#define IO_BUF_SIZE (2 * 1024 * 1024)
 
 static int img_convert(int argc, char **argv)
 {