Restorer Ultimate shows hard drive S.M.A.R.T. states using their icons.
You may check the hardware conditions of a drive more thoroughly by viewing its S.M.A.R.T. data. To see it, control-click the drive and select Show S.M.A.R.T. on the contextual menu.
S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) is a technology widely-used in hard drives and solid-state devices that monitors their reliability conditions to predict possible hardware failures.
In case the S.M.A.R.T. data of a drive shows hardware problems, Restorer Ultimate will show a warning. You may check the S.M.A.R.T. data and decide what to do with the drive.
This warning indicates that there are possible some small problems with the disk in the future, you may work with it but with cautions and regular check of these parameters.
Disk imaging is recommended. You may start imaging clicking the create its image with scan information link. Then you may recover your files later from that image.
This warning indicates that the disk conditions are critical and chances of hardware failure are great. The best recommendation for this case is to stop working with the disk and bring it to professional data recovery specialists. You may though continue to work with the disk at your own risk, but disk imaging is very strongly recommended. You may create the image by clicking the Create Image button. Then you may recover your files later from that image.