ntfs HD with io errors

[Ultima]

This is a 3 TB disk and spinrite can only scan the first 2 TB's. Usually
that would be enough if the product can fix it, but it is worth noting.

On Mon, Apr 16, 2018, 7:39 AM Polytropon <freebsd at edvax.de> wrote:

> On Mon, 16 Apr 2018 10:07:38 -0400, Ernie Luzar wrote:
> > Have a 3TB ntfs HD with i/o errors.
> >
> > ntfs-3g does read it, but a ls command of 2 different directories get
> > error msg about i/o errors and nothing is listed.
> >
> > Is there a way to fsck this HD to fix it?
>
> This depends on the actual reason for the error message.
> As it has been suggested, Spinrite can do a great job
> to "re-activate" broken disks, at least for copying
> their content once. Also check the tools in "ntfsprogs",
> one might be able to repair the file system... but I/O
> errors often indicate hardware failure. Have you tried
> to get a smartctl report for the disk yet?
>
>
>
> > There is only 600GB of data on the 3TB HD. Looking for way to copy the
> > data to a 1TB ufs HD.
>
>
>
> > What will dump command do with i/o errors?
>
> With dump, you can only process UFS file systems (as
> input); NTFS does not support it.
>
>
>
> > Can dd command skip over unused space?
>
> I think it can. You can also try dd_rescue or ddrescue
> which can handle I/O errors much better than stock dd,
> for example by using a dynamically adjusted block size
> for reading, or performing several attempts on a failed
> block.
>
>
>
> > Any other ideas?
>
> Find out if you have a hardware error or a filesystem
> inconsistency.
>
> Oh, and give Spinrite a try, it's really a great tool.
> Why isn't it on my list?! ;-)
>
> In worst case, use magicrescue to get at least the data,
> in case you might not be able to get the sorting information
> (directory hierarchy and file systems lost).
>
>
>
>
> --
> Polytropon
> Magdeburg, Germany
> Happy FreeBSD user since 4.0
> Andra moi ennepe, Mousa, ...
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