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I recently doubled the amount of RAM in a Windows 7 box and I want to ensure I'm taking full advantage of it. Is there a way to reset SuperFetch?

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migrated from serverfault.com Dec 19 '11 at 22:02

This question came from our site for system and network administrators.

up vote 6 down vote accepted

If you're using an SSD, Superfetch is off by default as it doesn't make sense in an SSD system.

If you're using Server 2008 R2, Superfetch is off by default.

If you're using Windows 7 on a conventional hard drive:

Run "net stop fileinfo", and delete the following three files under... AgGlFaultHistory.db AgGlFgAppHistory.db AgGlGlobalHistory.db (all under C:\Windows\Prefetch)

"SC Start SysMain" will get it going again.

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fwiw - Anyone using Rammap and experiencing c0000417 - An invalid parameter was passed to a C runtime function. on a 64-bit system, resetting Superfetch was what solved that issue. – Lieven Keersmaekers Mar 21 at 6:49

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