Manually Reset or Clear Dirty Bit in Windows without CHKDSK


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http://www.raymond.cc/blog/manually-reset-or-clear-dirty-bit-in-windows-without-chkdsk/

One mystery that has gone unsolved for the longest time is the dirty bit on hard drive volumes. Basically a dirty bit is just a 1 hex value located somewhere hidden on the hard drive that Microsoft has never reveal until today. Windows will check the dirty bit to determine if a volume can contain corrupted files due to hard resetting your Windows computer with files that are still opened or when you unplug a USB flash drive that is in the midst of copying a file. When the computer boots up with the dirty bit enabled, you will be asked to check the disk for consistency before Windows is loaded. You can skip the disk checking by pressing any key but it will come back again the next time you start up your computer.

As for USB flash drive with dirty bit, plugging the USB flash drive to a Windows 7 computer will prompt a window that ask ?Do you want to scan and fix Removable Disk? There might be a problem with some files on this device or disc. This can happen if you remove the device or disc before all files have been written to it?. If you close the popup or select ?Continue without scanning?, then this popup will continue to haunt you until you decided to click the recommended Scan and Fix option. There are guides on how to disable the scan and fix window by disabling the Shell Hardware Detection service but honestly I don?t think that is a solution since you?re telling Windows to ignore the problem rather than fixing the problem itself....

There is a tool called fsutil.exe in Windows which can be used to check if a volume is dirty and can even be used to manually set a drive dirty but weirdly it cannot be used to reset the dirty bit. ...

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