Restoring ext3 image with Trueimage?

[Peetoeng]

I used Trueimage 11 Home on bootable USB disk. I created backup image of a Linux ext3 partition with sector-by-sector. But when I tried to restore the image, the target partition was greyed (not selectable). The Only selectable partitions were my windows partitions.

It's a non-encrypted ext3. I use grub as boot loader.

Any idea why the target partition is not selectable?

Thanks.