TestDisk is an effective free registry repair tool! It was originally developed to assist recover lost partitions or make non-boots booting disks bootable again after these conditions are caused by erroneous software, viruses, or human error (like accidentally deleting your hard drive partition table). PhotoRec is basically a File Recovery tool designed to recover lost data; including music, documents and audio/video files from Hard Disks, CDROM and other removable media. These programs work very well on the majority of operating systems like XP, MacOS and Windows.
Windows users will need to download a free Windows application from Microsoft that will allow you to fix partitions and Bootsect errors, if applicable. After downloading, launch the Windows application and follow the on screen instructions. Once your Windows application has begun scanning, select the "fix boot sectors" checkbox to prevent your test disk from getting damaged. Now, restart your computer and try out your newly repaired partitions to boot successfully.
To fix a broken or problematic partition on your test disk, you will need to download and install a good photo or partition recovery software program. This will enable you to perform a manual scan of your test disc using your PC's optical drive. When your computer detected all problems, you will be able to repair broken partitions, re-size failed partitions, repair partially damaged files and find broken links among other problems.