Microsoft has included a backup feature called System Restore in Windows since ME. It is different to other backup methods like taking an image of the whole system. This is because System Restore doesn’t backup everything but only backs up important or system files when they are likely going to be changed. A restore point can be automatically created at specific points in time, before software or driver installs, before Windows updates or manually.
If a piece of software, driver or update is causing a problem, you can then select one of the created restore points to go back to that point in time. All the files and registry information will be restored to the earlier time, hopefully eradicating the issue. System Restore can also be used offline to restore the system by booting from a Windows repair CD or installation DVD.

Depending on how you use your computer, the system may create restore points quite often. This takes up space on your hard drive or SSD. By default, System Restore uses a specific amount of drive space before older points are removed to make way for new ones. However, it’s possible to adjust the amount of space that System Restore can use. Set it lower if you don’t want restore data to take up too much room, set it higher if you make lots of restore points.
System restore reliability is hit and miss but it might just save your system from needing a complete reinstall. As a result, it’s not recommended to turn the System Restore feature off if you don’t back up your system using other methods.
Here we show you four different ways in which you can change the maximum amount of drive space System Restore can utilize to create restore points. Use more if you need it, use less if you don’t. All methods work on Windows Vista, 7, 8 and 10.
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