Some years ago I saw a program called spinrite that refreshed the bad
sectors of a drive
and recovered information from bad blocks (obviously marking it back
after the refresh if it
really was a bad block). Maybe that is what you want.
Other then that, if the drive encounters a bad block it automatically
either mark it
or replaces it with a block from its replacement cache (which all new
drives have).
When you see bad blocks, it usually means there is no replacement for
these and its time
to replace the drive. Many times you'll hear a drive going back and
forth which could possibly
mean there were a lot of replacements in that area of reading.
Regards,
tzahi.
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Amos Shapira
> Sent: Tuesday, August 02, 2005 1:02 AM
> To: linux-il
> Subject: Re: low-level formatting?
>
>
> On 8/1/05, Karasik, Vitaly <[EMAIL PROTECTED]> wrote:
> > According to e2fsck manpage, you should run fsck -cc (man
> e2fsck) for
> > marking bad blocks. I haven't tried this.
>
> That's not low-level format - what it does is to tell the
> filesystem code how to avoid bad blocks. But if I want to
> install, e.g. a swap partition or Windows then I might be out
> of luck, as there is no way to tell them to avoid the bad
> blocks (that I'm aware of).
>
> "low-level format" takes advantage of the driver's
> capabilities for automatic remapping of bad blocks and just
> causes the drive to check all the blocks and re-map the bad
> ones. Once this is done the OS above should see the disk as a
> clean surface.
>
> Thanks,
>
> --Amos
>
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