De acordo com este artigo , O Windows remove os pontos de restauração quando a memória atribuída está cheia.
System Restore might use between three and five percent of the space on each disk. As the amount of space fills up with restore points, it deletes older restore points to make room for new ones. System Restore doesn't run on disks smaller than 1 gigabyte (GB).
You can manage the disk space that is used by System Restore by following these steps:
- Open System by clicking the Start button , right-clicking Computer, and then clicking Properties.
- In the left pane, click System protection. Administrator permission will be required. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
- Under Protection Settings, click the disk, and then click Configure.
- Under Disk Space Usage, move the slider to the right to increase the disk space that system protection can use or move the slider to the left to decrease the disk space.
Se você não ajustou essas configurações para permitir espaço adicional, provavelmente os pontos de restauração anteriores desapareceram.