If you burn an Acronis ISO, you can define where the image file(s) are stored. Once an image is created, you can then restore the image wherever you want it to go.

As long as the image isn't on the same partition.

I also recommend running tool like partition magic, gParted, or MiniTool Partition Wizard. to make sure the partition has the max amount of space available once the imaging is over. This is mainly only needed if for instance you image a 20GB hard drive, then restore the image on a 40GB hard drive. The system will only recognize 20 of the 40GB available. Using one of the above tools, you can resize the partition to 40GB and all is right in the world.

I did all of this when I upgraded the mail store partition in Exchange a couple months ago. Work smart not hard.