that means 'dirty volume' after running disk check? What steps?

After having problems starting up my computer (Windows XP, SP 3), check the automatically executed drive.  The phase of verification of files indicated "dirty volume". What does that mean and what should be done?  All other controls were normal, and the PC starts normally on next attempt off. PC is Dell Optiplex 745, 4 GB of RAM, two disks (C = 250 GB, E = 500 GB).

Hi AllStr8Talk,
 
The dirty bit is set for two main causes - a software such as your abnormal termination problem, or a more serious hardware problem which can indicate a failing drive. It's this bit salty which, during the transfer of data, tells your computer to run the command chkdsk at startup (autochk).
 
You can check the status of your bit of impurity of a window using command prompt Fsutil: dirty command.
For more information, see:
 
Once a volume was marked as dirty, the only way to clear the dirty bit is to run "chkdsk/r" or "chkdsk/p" when the volume is not in use.  The only way a volume can not be used while Windows XP is just starting to load or from the Windows XP Recovery Console.
For more information, see:

How to perform disk error checking in Windows XP

Chkdsk

Note: Running chkdsk on the drive if bad sectors are found on the disk hard when chkdsk attempts to repair this area if all available on which data can be lost.

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    fsutil dirty query C:

    The sample output:
    Volume c is dirty
    Volume C: is dirty

    Type "exit" to close the command prompt window.

    If you are suspicious of your HARD drive and think it might be failing, now would be a good time to backup your personal data (documents, pictures, music, etc.) to an external location - a separate attached USB drive or a few clouds on the Internet.

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