Wednesday, October 20, 2010

System Restore

SYSTEM RESTORE:
This utility uses to create a data store. If you don't have 200MB of free space, System Restore remains disabled until the space becomes available, at which point the utility enables itself. System Restore uses a first in/first out (FIFO) storage scheme: The utility purges old archives to make room for new ones when the data store reaches a set limit.

The file types that System Restore monitors are many but include most of the extensions that you typically see when you install new software (e.g., .cat, .com, .dll, .exe, .inf, .ini, .msi, .ole, .sys). Note that only application installations that use a System Restore restorept.api-compliant installer will trigger the creation of a restore point.

Creating a Restore Point:
1. Start--> All Programs-->Accessories--> System Tools--> System Restore.
2. Welcome screen appears asking for restoring the system or to create a restore point.
3. Chose Create a restore point and click Next.
4. Name the restore point and then create.






Restoring a System:
1. Start--> All Programs--> Accessories--> System Tools--> System Restore.
2. Chose Restore my computer to an earlier time, click Next.
3. Then you will be presented with a callender to choose the date and the restore point, Select the appropriate date and then choose the restore point that you have created or the one which is listed for the specified date.
4.Click Next, and confirm the restore point.
5. System restore will close all running programs if you have any, and proceed with the restoration.
6. Computer reboots and the compuetr will be restored to the previous state.


Problems with System Restore:

There are few problems associated with System Restore when it comes to viruses.When restore points are created they are stored in a directory that is accessible only to the System account and not to a user. This keeps the restore points safe from misuse and tampering.

Unfortunately this also means that any virus scan software you may have installed can not scan the files located there as well. This causes a problem if a file that is infected with a virus gets backed up into a restore point because now the anti-virus software can not clean it.

Now if you ever restore from a restore point, that file that is infected will be introduced back into your system.

Keeping this in mind, if you find that you are infected with a virus, hijacker, or spyware and want to make sure you do not get reinfected. You Should Turn System Restore Off And Then Back On Again To Clear All The Restore Points. This will guarantee that their are no infected files that could be restored.

Click Here To know more about VIRUS and other Computer Threats

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