Excellent utility which allows you to examine, change and repair Spectrum +3 disks. These are pre-packaging copies from a 1980's computer store - there is no commercial packaging, just the disk and instructions.
I use this program myself extensively.
The disks are not the originals and are recycled. They are relabelled and some may still have old labels which couldn't be removed beneath the new ones.
Can fix corrupted disks and files, un-erase files deleted in error, format disks which cannot be formatted from +3 BASIC (No Data error on track 0), edit files and much more.