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The lazy write phenomenon is the method that Windows 2000 and XP use with the non-journalized file system that these operating systems use. The file systems have a clock skew of up to one hour based on the implementation of the NTP system used by the OS's. The write caching component is also a side effect of the non-journalized file system that these OS's use. This is where the file is written to disk initially, but not finalized right away in case the user makes a change to the file operation. Once an hour has elapsed, the OS assumes the file operation is final, and commits the change to disk.


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This is correct. Indeed, but with Service Pack 3 on XP, the commit can take up to two hours.

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Q: Why in Windows 2000 and Windows XP does the lazy write phenomenon or deferred write caching permit the last accessed time and date to be updated as much as an hour after the user performs an activity?
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