This article was previously published under Q195541
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A system may leak nonpageable memory when a large amount of mounts anddismounts are done on an NTFS partition.
The driver Ntfs.sys does not keep track of a VPB structure if a dismountrequest is followed by an unlock request. The memory leak is small, so theproblem will usually appear after a period of days. POOLMON can be used tocheck this problem. Look for the NtfV tag taking up a lot of thenonpageable memory. Performance Monitor can also be used to monitornonpageable memory use.
To resolve this problem, obtain the latest service pack for Windows NT 4.0. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
152734 How to Obtain the Latest Windows NT 4.0 Service Pack
Microsoft has confirmed this to be a problem in Windows NT version 4.0. This problem was first corrected in Windows NT version 4.0 Service Pack 5.