I bought a new PC, which comes with Win7 pre-installed. Just in case (warranty, blah) I want to back-up the whole ssd.
  1. I tried with Clonezilla, but Clonezilla reported that the image is not checkable
  2. I tried to img with dd, but dd worked whole night ( for 128gb ssd) and never finished
  3. I am doing the same with ddrescue at the moment(it report progress).

ddrescure /dev/sda /blah/lenovo.img
Can I restore the img file produced to the hard-disc again. Usually, I can go with
dd if=blah/lenovo.img of=/dev/sda
and this should revert changes back.
Can I do the same with ddrescue-img, with dd or ddrescure?