Thank you, Tim,
you explained very good.

I use HD SATA/64 MB cache
         WD 10EZEX,  the problem cannot depend by the setting the configuration.

Although this  the error message :
ATA2:00: link is slow to respond....
                  (and )
ATA200: SRST failed (erro 16)
seem indicate that the HD is not recognized ...

I have to say that The computer boot regularly in Windows... But windows is stored on other HD...

I think that I should check the HD healthy ? what tool I can use to do it in safety mode?

On Tue, May 5, 2015 at 1:21 PM, Tim <> wrote:
On Tue, 2015-05-05 at 10:25 +0300, Angelo Moreschini wrote:
> the problem can depend by the physic set up of the HD (as "master",
> "slave", "single drive", ...): this set up can be done by changing the
> position of a jumper on the HD...
> I know that, in the past time, the HDs had to be set physically in
> this way.., but recently I never heart anymore that the modern HD need
> this operation..

If it is a parallel (ribbon cable) type of connection, then master and
slave configuring is essential.  Sometimes that's done by setting
jumpers on the drive, alternatively the drive can be jumpered so that
the ribbon cable sets which is slave or master (the ribbon connectors
are wired differently, with master on the end, slave in the middle, and
the connector that is furthest away from the others goes into the

But if it's a serial (SATA) connection, only one drive can be connected
to a host, so there is no master and slave arrangement.  With older
hardware, it's sometimes necessary to set a jumper which forces the
drive to run in a slower mode, or forces it to pretend its a smaller
drive than it really is.

tim@localhost ~]$ uname -rsvp

Linux 3.19.5-100.fc20.i686 #1 SMP Mon Apr 20 20:28:39 UTC 2015 i686

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