Could anybody try to explain me what functionality is in SR.SYS
on XP?
Thanks Ondra.
Centrum pro milovn?ky pen?z http://finance.centrum.cz
Its overall purpose is to allow a user to “undo” a software installation.
It does this by creating periodic restore points and then monitoring what “interesting” files are changed since the last restore point. Interesting files are defined by its extension and what directory it is in. SR maintains a log of these changes and a copy of the files before they were changed. It will only copy a given file once into the current restore point.
New restore points are automatically created periodically (I believe once a day). Newer installation packages that are SR aware will trigger a new restore point before they start their installation. A user also has the ability to define a new restore point as well.
The SR service automatically monitors disk space usage and purges off old restore points as needed.
I hope that helps,
Neal Christiansen
This posting is provided “AS IS” with no warranties, and confers no rights.
-----Original Message-----
From: “Ondrej?evecek” [mailto:xxxxx@centrum.cz]
Sent: Friday, April 26, 2002 3:39 AM
To: File Systems Developers
Subject: [ntfsd] SR.SYS
Could anybody try to explain me what functionality is in SR.SYS
on XP?
Thanks Ondra.
Centrum pro milovn?ky pen?z http://finance.centrum.cz
You are currently subscribed to ntfsd as: xxxxx@Windows.Microsoft.com
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One thing that Neal left out is that SR.SYS is the filter driver component of the System Restore feature in Windows XP Home and Professional verisons. There is more information about the System Restore feature in the Platform SDK for Windows XP.
Molly Brown
This posting is provided “AS IS” with no warranties, and confers no rights.
-----Original Message-----
From: Neal Christiansen
Sent: Friday, April 26, 2002 7:21 AM
To: File Systems Developers
Subject: [ntfsd] RE: SR.SYS
Its overall purpose is to allow a user to “undo” a software installation.
It does this by creating periodic restore points and then monitoring what “interesting” files are changed since the last restore point. Interesting files are defined by its extension and what directory it is in. SR maintains a log of these changes and a copy of the files before they were changed. It will only copy a given file once into the current restore point.
New restore points are automatically created periodically (I believe once a day). Newer installation packages that are SR aware will trigger a new restore point before they start their installation. A user also has the ability to define a new restore point as well.
The SR service automatically monitors disk space usage and purges off old restore points as needed.
I hope that helps,
Neal Christiansen
This posting is provided “AS IS” with no warranties, and confers no rights.
-----Original Message-----
From: “Ondrej?evecek” [mailto:xxxxx@centrum.cz]
Sent: Friday, April 26, 2002 3:39 AM
To: File Systems Developers
Subject: [ntfsd] SR.SYS
Could anybody try to explain me what functionality is in SR.SYS
on XP?
Thanks Ondra.
Centrum pro milovn?ky pen?z http://finance.centrum.cz
You are currently subscribed to ntfsd as: xxxxx@Windows.Microsoft.com
To unsubscribe send a blank email to %%email.unsub%%
You are currently subscribed to ntfsd as: xxxxx@windows.microsoft.com
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Hello,
what FSFilter SR.SYS does on XP? It is in FSFilter System
Recovery group and have only write/setinfo entry points - so I
suppose, it backups operations changing data? XP works well
without this driver started.
Thanks Ondra.
?ena v centru pozornosti na http://zena.centrum.cz
SR is part of “System Restore” - a mechanism on Windows XP that allows you
to “roll back” your system to an earlier point in time. While the system
will run without this filter, you will not be able to roll back in time
without it.
Regards,
Tony
Tony Mason
Consulting Partner
OSR Open Systems Resources, Inc.
http://www.osr.com
-----Original Message-----
From: “Ondrej?evecek” [mailto:xxxxx@centrum.cz]
Sent: Sunday, May 05, 2002 2:50 AM
To: File Systems Developers
Subject: [ntfsd] SR.SYS
Hello,
what FSFilter SR.SYS does on XP? It is in FSFilter System
Recovery group and have only write/setinfo entry points - so I
suppose, it backups operations changing data? XP works well
without this driver started.
Thanks Ondra.
?ena v centru pozornosti na http://zena.centrum.cz
You are currently subscribed to ntfsd as: xxxxx@osr.com
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