Write Caching Settings for Hard Disk May Not Persist After You Restart Your Computer

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Article ID: 290757 - View products that this article applies to.
This article was previously published under Q290757
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SYMPTOMS

When you change the write cache settings for the hard disk, these settings may not persist after you restart your computer. When you restart the computer, the Write caching enabled setting may always be enabled.

CAUSE

This problem can occur if you disable the write cache for the hard disk by using the Disk properties; the Windows 2000 disk drivers send the disable write cache command to the hard disk, and the write cache is disabled for that Windows session. However, the Windows 2000 disk drivers do not save the user selections for the hard disk Write caching enabled setting. When you restart Windows 2000, the Windows 2000 disk drivers enable the hard disk write cache setting by default.

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
The English version of this fix should have the following file attributes or later:
   GMT-UTC Date Time   Version        Size    File name
   -------------------------------------------------------
   16-Nov-2001  17:23  5.0.2195.4643  34,416  Classpnp.sys
   14-Dec-2001  22:12  5.0.2195.4771  29,968  Disk.sys
				

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 3.

MORE INFORMATION

For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:
265173 The Datacenter Program and Windows 2000 Datacenter Server Product
For additional information about how to install multiple hotfixes with only one reboot, click the article number below to view the article in the Microsoft Knowledge Base:
296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot
To enable and disable write caching:
  1. On your desktop, right-click the My Computer icon, and then click Properties.
  2. Click the Hardware tab, and then click Device Manager.
  3. Double-click the Disk drives branch to expand it.
  4. Right-click the hard disk that you want to work with, and then click Properties.
  5. Perform one of the following steps, as appropriate:
    • To enable write caching, click the Disk Properties tab, click to select the Write Cache Enabled check box, and then click OK.
    • To disable write caching, click the Disk Properties tab, click to clear the Write Cache Enabled check box, and then click OK.
For additional information, click the article number below to view the article in the Microsoft Knowledge Base:
281672 Possible Data Loss After You Enable the "Write Cache Enabled" Feature
For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:
249149 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes

Properties

Article ID: 290757 - Last Review: November 14, 2003 - Revision: 3.0
APPLIES TO
  • Microsoft Windows 2000 Enterprise Edition
  • Microsoft Windows 2000 Enterprise Edition
  • Microsoft Windows 2000 Professional Edition
Keywords: 
kbbug kbenv kbfix kboswin2000fix kbwin2000presp3fix kbwin2000sp3fix KB290757

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