How to Enable System Restore
If you want to be protected by System Restore, you should absolutely turn it on for at least your system drive. In most cases, that’s all you need, since all the things System Restore protects tend to be located on the system drive anyway. If you want to turn on System Restore protection for other drives–say, for example, you install some programs to a different drive–you can do that too.
To make sure System Restore is turned on–and to enable it for specific drives–hit Start, type “restore,” and then click “Create a restore point.” Don’t worry. This doesn’t actually create a restore point; it just opens the dialog where you can get to all the System Restore options.
On the “System Protection” tab, in the “Protection Settings” section, you’ll see the available drives on your PC and whether protection is enabled for each drive. To turn on protection, select a drive on the list and click the “Configure” button.
(In our case, System Restore was already enabled for our C: drive. If it isn’t on your system, that’s the first drive you’ll probably want to enable it for.)
In the “System Protection” dialog that opens, click the “Turn on system protection” option, adjust the “Max Usage” slider to the amount of hard drive space you want System Restore to be able to use, and then click “OK.”
You can then click “OK” again to exit the System Properties dialog. Just be aware that when Windows creates a restore point (or you create one manually), System Restore will create a restore point on all the drives that have system protection enabled.