| title | description | ms.topic | ms.assetid | ms.author | author | manager | ms.date |
|---|---|---|---|---|---|---|---|
autochk |
Reference article for the autochk command, which runs when the computer is started and prior to Windows Server starting to verify the logical integrity of a file system. |
reference |
8787e6a3-f023-4ea5-b2d1-61c6876d8aff |
jgerend |
JasonGerend |
mtillman |
10/16/2017 |
Runs when the computer is started and prior to Windows Server starting to verify the logical integrity of a file system.
Autochk.exe is a version of chkdsk that runs only on NTFS disks and only before Windows Server starts. autochk cannot be run directly from the command-line. Instead, autochk runs in the following situations:
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If you try to run chkdsk on the boot volume.
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If chkdsk cannot gain exclusive use of the volume.
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If the volume is flagged as dirty.
Warning
The autochk command-line tool cannot be directly run from the command-line. Instead, use the chkntfs command-line tool to configure the way you want autochk to run at startup.
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You can use chkntfs with the /x parameter to prevent autochk from running on a specific volume or multiple volumes.
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Use the chkntfs.exe command-line tool with the /t parameter to change the autochk delay from 0 seconds to up to 3 days (259,200 seconds). However, a long delay means that the computer does not start until the time elapses or until you press a key to cancel autochk.