Clonezilla - Error on umount

[Leolicious]

Hi guys. I'm new in this forum.

Yesterday I had downloaded the Clonezilla to making and disk cloning.

I'm facing the error after I'm pressing Enter on this phase. Refer to the figure.

I got 3 partition on it.

SDA1 - 130MB
SDA2 - 70GB
SDA3 - 70GB
SDA4 - 298GB

I'm choose for the SDA4 to store the cloning image. But it asked to umount the partition.

http://i151.photobucket.com/albums/s155/HongJaiz/clonezilla-tutorial-11.png

I had been searching for solution by using Google. But still, I cannot solve my problem yet.

So I seek for help at this forum.

Thanks!

[Leolicious]

Bumpz