Tool absolutely essential! You have to think through the bios before any chose..et put the boot on the CD then inserting the CD, you boot on the cd..on wait a few seconds and acronis starts (the disk must be connected to the PC with the small device) There, just follow the instructions on the screen: we copy the "old" drive "(source) to the source SSD..chez me for a 1TB drive (but a 300GB occupation it took 30 minutes to send the crucial 480 Go.j'ai put everything automatically, the two partitions are created ... In the end, the CD is removed and extinguished! .. then mounting the new disc in the portable, or instead of the other, or if there is space in the proper location. We return through the BIOS, choose the boot on the new drive! .. On backup and go! It retains its very quick start windows..et license in 13 seconds.