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If you notice that your Windows 7 or Windows Server2008 R2 starts rather slowly, you can among others check the number of system recovery points on your computer.
You may have created many system restore points manually. If this is the case, it could extend the Windows 7 boot time.
The reason is :
Volsnap.sys is a system file that is found both in the C:WindowsSystem32 driver and in the C:WindowsSystem32DriverStoreFileRepository repository.
ReadyBoot (Not ReadyBoost) is a boot acceleration technology that maintains an in-RAM cache used to maintain disk readings faster than a slower storage medium such as a drive. ReadyBoot reads (pre-extract) the data into the cache before it is requested. Pre-extraction optimizes disk access patterns based on disk location and characteristics. Read Requests from system processes, services and user applications are then served from ReadyBoot RAM cache.
Now this Volsnap.sys file must validate the Windows snapshot that each system restore point creates each time it starts. If you now have too many restore points, the ReadyBoot boot plan will exceed the 512 KB limit and cannot be saved. This startup plan is stored in the following registry entry:
In such cases, boot I/O operations are therefore not cached, resulting in a slow boot.
If you are facing a slow boot, you should also check the number of system restore points. To solve this problem, you can also request a HotFix368028 from KB255555428. Only do this if you are regularly confronted with this problem.
Our System Restore Manager, a free portable software that allows you to fully manage your Windows system restore points and customize options may also interest you.
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