diff --git a/bsp/qemu-vexpress-a9/qemu-dbg.sh b/bsp/qemu-vexpress-a9/qemu-dbg.sh
new file mode 100755
index 0000000000000000000000000000000000000000..44bc1ad9676e8a0c2abeb3446d32195da737cc19
--- /dev/null
+++ b/bsp/qemu-vexpress-a9/qemu-dbg.sh
@@ -0,0 +1,6 @@
+if [ ! -f "sd.bin" ]; then
+dd if=/dev/zero of=sd.bin bs=1024 count=65536
+fi
+
+
+qemu-system-arm -M vexpress-a9 -kernel rtthread.elf -serial vc -serial vc -sd sd.bin -S -s
\ No newline at end of file
diff --git a/bsp/qemu-vexpress-a9/qemu-nographic.sh b/bsp/qemu-vexpress-a9/qemu-nographic.sh
index 1a26bd9cebedb1aff3849b19ee8b09bb1da1a3df..61abb6878da82665bc38ebfc47ff6a229dc77ec8 100755
--- a/bsp/qemu-vexpress-a9/qemu-nographic.sh
+++ b/bsp/qemu-vexpress-a9/qemu-nographic.sh
@@ -1,5 +1,5 @@
 if [ ! -f "sd.bin" ]; then
-dd if=/dev/zero of=sd.bin bs=64M count=1
+dd if=/dev/zero of=sd.bin bs=1024 count=65536
 fi
 
 qemu-system-arm -M vexpress-a9 -kernel rtthread.elf -nographic -sd sd.bin -net nic -net tap
diff --git a/bsp/qemu-vexpress-a9/qemu.sh b/bsp/qemu-vexpress-a9/qemu.sh
index d9b350388b1146e888927c8d1fa0a0c90e614998..c8fef610c71ba98ffc22aefe60e25746b86391d7 100755
--- a/bsp/qemu-vexpress-a9/qemu.sh
+++ b/bsp/qemu-vexpress-a9/qemu.sh
@@ -1,5 +1,5 @@
 if [ ! -f "sd.bin" ]; then
-dd if=/dev/zero of=sd.bin bs=64M count=1
+dd if=/dev/zero of=sd.bin bs=1024 count=65536
 fi
 
 qemu-system-arm -M vexpress-a9 -kernel rtthread.elf -serial stdio -sd sd.bin