I'm having a problem where image files made on a certain machine constantly fail to verify. I have tried various test configurations including: Back up entire hard drive to USB-connected drive Back up entire hard drive to mapped network share Back up entire hard drive to network share using UNC name Back up single partition of hard drive to other partition of same hard drive In order to determine whether the failed verification was a false negative, I moved the image files to another computer with Acronis installed and checked them there. The image files were confirmed to be corrupted. The problem is isolated to a single computer. I successfully backed up and verified a hard drive on another computer that I own using the same version of the software. On the "problem" computer, I also successfully backed up and verified a few files, but whole-drive or whole-partition backups never verify successfully. I ran a checkdisk on the "problem" computer's hard drive. No errors were found. My S.M.A.R.T. monitor program doesn't show the hard drive to have hardware problems. I have submitted a support request via the Acronis web site, but I thought I'd also post here to double my chances of resolving the problem.