#How to run a disk check on startup how to#
#How to run a disk check on startup windows#

#How to run a disk check on startup windows#

There are other important functions the Windows chkntfs command performs you should know about, which are discussed in more detail on page 2. When that happens, you will have to use data recovery softwareВ or some third party tools to recognize and recover the CHK files. But sometimes it makes sense if you donвЂ™t want it to scan your hard drive because if it finds anything bad, damaged files will be changed to File00001.CHK. There are some experts who believe that itвЂ™s better not to disable Check disk from scanning your hard drive. Make sure to right click and вЂњRun as AdministratorвЂќ. bat file, then enter the drive letter(s) to exclude from autocheck when prompted, the rest is automatic. Sometimes users donвЂ™t like editing the registry or using the command prompt, which is why for your convenience, we have created a simple batch file to run the command for you. Simply add all the drives you want to exclude in this way, separating them with a space. If you have a second drive to exclude, C: and D: for example, you can disable Check disk with the command below. If you have drive C: as the drive you want exclude, then the command to disable chkdsk from scanning the C: drive would be: Start -> Run (or Win key+R) -> type cmd and press enter This switch will exclude a drive from the default boot time check. There are people who suggest editing the registry to do this which works if done properly, but the recommended and safer way to disable auto Check disk from starting up is using the /x switch via the chkntfs command in Command Prompt.

#How to run a disk check on startup how to#

HereвЂ™s how to disable or stop Check disk from scanning your drives in Windows boot for Windows XP, Vista, 7 and Windows 8. Another option for these drives is to simply instruct Windows not to bother checking whether they have been marked as dirty on boot, so youвЂ™ll never get a request to auto check them again. While resetting the dirty bit manually would be the best solution for many situations, it is more difficult to do on system drives such as C because they will be locked and not allow editing from within Windows to change the bit value. However, when a drive letter is being marked as dirty, we discovered the location of the hex values on the drive that are being modified and resetting the dirty bit hex value to default will magically stop the auto disk check on boot. If the fsutil tool reports that the drive letter is not dirty, the disk checking process will not want to run for that drive. One easy way to determine if a drive letter is marked as dirty and will require auto chkkdsk on boot is to run the command fsutil dirty query C: in Command Prompt. This value is known as a вЂњDirty bitвЂќ and is a single hex value (2 values for Windows 8) that Windows looks at on boot for system drives or when the the external device is inserted. What we have found out is that when Windows detects there has been an improper shutdown or a drive such as a USB flash drive has been ejected before the system has finished with it, a secret value is stored on the drive to let Windows know about the issue and force a Check disk request. Sometimes, even after letting Check disk scan the drive that it wants to, the checking process would still automatically run at next boot and it wants to check the drives again.

Simply pressing any key would stop Check disk from running but when you restart your computer, youвЂ™ll get this prompt again because Windows still thinks the drive needs scanning and will keep reminding you until it is checked. To skip disk checking, press any key within 10 seconds(s). You may cancel the disk check, but it is strongly recommended that you continue. One of your disks needs to be checked for consistency. The blue colored screen appears on Windows XP or black colored screen for Windows Vista and 7 during boot that says: One of Windows annoying so called вЂњfeaturesвЂќ is the Windows disk checker ( Chkdsk) being automatically executed whenever you donвЂ™t shut down your computer properly.