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Enabling Write Caching

You should also make sure that your hard disk has write caching enabled. Write caching means that Windows Vista doesn’t flush changed data to the disk until the system is idle, which improves performance. The downside of write caching is that a power outage or system crash means that the data never gets written, so the changes are lost. The chances of this happening are minimal, so I recommend leaving write caching enabled, which is the Windows Vista default. To make sure, follow these steps:

1.
Select Start, right-click Computer, and then click Manage. After you enter your User Account Control credentials, Vista displays the Computer Management window.

2.
Click Device Manager.

3.
Open the Disk Drives branch.

4.
Double-click your hard disk to display its properties sheet.

5.
In the Policies tab, make sure that the Enable Write Caching on the Disk check box is activated.

6.
For maximum performance, activate the Enable Advanced Performance check box. (Note that this option is available only with certain hard drives that support it.)

Caution

Activating the Enable Advanced Performance option tells Vista to use an even more aggressive write-caching algorithm. However, an unscheduled power shutdown means you will almost certainly lose some data. Activate this option only if your system is running off an uninterruptible power supply (UPS).

7.
Click OK.


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