Ondra,
Take a look at the following article for a detailed explanation on Chkdsk:
187941 An Explanation of CHKDSK and the New /C and /I Switches
http://support.microsoft.com/?id=187941
Jeff Patterson
Microsoft Support
"Dan Seur" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Ondrej - at a command prompt, run chkdsk /?
>
> This will show you the functions and parameters of chkdsk.
>
> The speed of chkdsk depends on the size of the volume's index and data
> structures and whether any parameters are present which will cause
> repair operations. Chkdsk can be quite fast. It is also very reliable
> and efficient; little escapes it.
>
> The MS knowledge base probably has details about chkdsk's operation.
>
> Ondrej Sevecek wrote:
> > Hello,
> > is somewhere any explanation about ChkDsk/autochk for Windows 2000,
which
> > could explain me, why the check on NTFS is so quick? Is it enough to
detect
> > bad sectors or some other disk/diskformat errors?
> >
> > thanks Ondra.
> >
> >
> >
>