"Frank" wrote in message news:eixWQA4gIHA.5280@TK2MSFTNGP02.phx.gbl...
>
> VanguardLH wrote:
>>
>> "Frank" wrote ...
>>>
>>> XP Home SP2
>>>
>>> Norton's Disk Doctor says I have a "file structure problem", I
>>> have
>>> "Fix Errors" checked and schedule a Repair on re-start.
>>> On re-start, Windows runs Chkdsk and reports "no problems"
>>>
>>> Is there a better Utility to repair my HD?
>>
>> SpinRite
>> www.grc.com
>>
>> Running "chkdsk" does absolutely nothing to fix any problems on the
>> hard disk. It only does a scan to report any problems. If you
>> want to attempt to fix them, include either the /f or /r
>> command-line switches. Run "chkdsk /?" to get help on using
>> chkdsk.
>
> I do know about the /f switch...
> If I go to Run and enter chkdsk c:/f it will schedule a repair....
> and report no problems on re-booting.
Then use the /r switch to have chkdsk check the sectors are readable.
Rather than just check the file system is okay, it also ensures the
data is readable from the platters. It is not an infallible check. I
believe the OS will permit up to 5 retries to read a sector before
saying there is a problem reading from it, and hard disks may permit
up to, say, 3 retries before reporting an error, so it could be 15
retries total of which it could take only one, like the last one, to
get the data to pass the test.
SpinRite is a better low-level sector test utility but it isn't free.
What users don't realize is that retentivity of a sector wanes over
time unless its data is read and rewritten. The dipoles to record the
data are under magnetic stress and will alter alignment over time. If
magnetic data, which includes the file system, is not exercised, it
will lose its ability to be read. Microsoft has never provided a
utility to read and rewrite all bits in every sector on the hard disk.
They also provide poor utilities to determine the reliability or
retention of a sector's area on the hard disk, and sectors can lose
retentivity over time either because of non-use (dipolar shift) or due
to manufacturing defect or degradation. However, the time for such
degradation (physical or magnetic) is usually many years and users
often replace their hard drives before those problems show up by
getting a new computer (and new drives versus migrating the old drives
into the new host) or getting bigger drives.
So try "chkdsk /r" first. Also, I gave up on relying on Norton's Disk
Doctor a long time ago, but then I haven't used Norton products for
several years now. When NTFS v5 came out that Disk Doctor would start
reporting non-existing problems was when I gave up on it. They
might've fixed it since then but I never felt it was a reliable repair
tool. You didn't mention WHICH version of Disk Doctor that you are
running or from what version of whatever Norton suite it came bundled.
Maybe what you are trying to use is simply too old and unusable. I'm
not specifically trying to promote SpinRite but instead feel that Disk
Doctor is too lightweight a utility to fix any real [physical]
problems on a hard disk. In fact, I wouldn't be surprised if "chkdsk
/r" was about as much as Disk Doctor could itself perform.