Fresh install of Mint Linux on an erased hard drive, with only a few things added, total space used was just under 13 GB. Booted the True Image CD and made a backup using defaults, NOT sector by sector. Seemed to take a very long time and when finished, looked at the destination drive - backup was 235 GB. Linux Mint 32 bit (ext4), on a tested 500 GB drive. Tried omitting the swap partition - made no difference. Why so huge ?