SP4 Periodic Disk Access Interferes with Power Management
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Windows NT version 4.0 Service Pack 4 (SP4) systems access the hard diskapproximately every five minutes. This access interferes with PowerManagement. For example, if your hard disk spins-down after a few minutesof inactivity, the hard disk will spin-up every five minutes.
The Event Log service in Service Pack 4 maintains a time stamp on the harddisk. This time stamp is used to approximate system shutdown time wheneverWindows NT is not properly shut down. By default, the time stamp is updatedevery five minutes. This feature was intended to operate only on Windows NTServer systems. Unfortunately, it is also enabled by default on Windows NTWorkstation systems.
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to:
- http://www.microsoft.com/downloads/details.aspx?familyid=E396D059-E402-46EF-B095-A74399E25737&displaylang=en/ -or-
- 152734 how to obtain the latest windows nt 4.0 service pack
Microsoft has confirmed that this is a problem in Windows NT 4.0 Service Pack 4. This problem was first corrected in Windows NT 4.0 Service Pack 5.
This hotfix adds the following to the registry:
with the following value:
Value Name: TimeStampInterval Data Type: REG_DWORD Value: 0
4.00 sp4 disk access writes
Article ID: 194749 - Last Review: 01/06/2015 03:51:47 - Revision: 4.0
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