TIP
You don??™t have to use ChkNTFS to perform some tasks. For example, when you want to set up
a drive for a scan, right-click the drive in Windows Explorer and choose Properties from the context
menu. Select the Tools tab and click Check Now. You??™ll see a Check Disk dialog box. Check
both of the repair options and click Start. When working with a boot drive, Windows Explorer displays
an error saying that it couldn??™t complete the check. It then offers the chance to perform the
check later during the next boot. Click Yes and Windows Explorer sets up the check.
Understanding How AutoChk Works with ChkNTFS
AutoChk is a non-Windows application; you can??™t run it from the command prompt. However, the
utility does run during the boot process, which is when you??™ll see it at work. The AutoChk utility
determines which volumes to check at boot time based on entries it finds in the registry. The
HKEY_
LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager
key normally contains a
value that indicates that AutoChk should check all volumes for the dirty bit (attribute), which
means that they require a boot time check.
The dirty bit is an indicator.
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