Image larger than source

Using version 8, creating an image of C: drive which has 56GB of data and the resultant image is 65GB.

Why is the resultant image larger than the source?

 

If you have a lot of compressed files like mpegs, jpegs, zips, etc and you are asking TI to compress the archive, it can be larger due to compressing an already compressed file. If so, select no compression in the backup options.

 

The cluster size of the source partition may be smaller than the destination partition. I know that Ti6 changes the 2K cluster size of my source partition to 4K when I restore the image file. Larger cluster size translate to larger used space.

Imaging a compressed file should not increase its size, however, I haven't tested Ti9 to confirm this.

 

It isn't the imaging it is compressing an already compressed file again.

Have a look at this rather wild example:

https://www.wilderssecurity.com/showthread.php?t=137571