How to manually adjust the size of the Data Store

The size of the Data Store is determined by the size of the Windows drive and is as follows:
•
The minimum size of the Data Store is 200 megabytes (MB). If your Windows drive has fewer than 200 MB of free space after you install Windows Millennium, System Restore is disabled by default and you will have to manually enable System Restore after you have freed up sufficient disk space. If System Restore is disabled due to the low disk notifier, System Restore automatically re-enables itself after sufficient disk space is made available.
•
On logical drives that are less than 4 gigabytes (GB), the maximum size of the Data Store is 400 MB.
•
On logical drives that are 4 GB or larger, the Data Store is approximately 12 percent of the logical drive that Windows Millennium is installed on.


Note: Once the Data Store reaches 90 percent of the allotted size, it begins to "purge" older Restore Points on a first-in first-out (FIFO) basis until the Data Store reaches 50 percent of its allotted size. The actual number of Restore Points available after this purge occurs may vary, based on what software was recently installed.
To manually adjust the size of the Data Store, follow these steps:
1.
In Control Panel, click System.
2.
Click the Performance tab.
3.
Click the File System button.
4.
On the Hard Disk tab, adjust the System Restore disk space use slider to the preferred size

Registery

•
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SrThis key is related to the System Restore filter. This key and its values must not be be modified under any circumstances as any modifications can cause the operating system to malfunction.
•
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SrserviceThis key is related to the System Restore service. This key and its values must not be be modified under any circumstances as any modifications can cause the operating system to malfunction.
•
HKEY_LOCAL_MACHINE\Software\Microsoft\WindowsNT\CurrentVersion\SystemRestoreIn this registry key, you can modify some DWORD values. However, in this key, there are some values that must not be modified under any circumstances.



Note: Applicable for window vista/windows xp/2000