Re: [Bug-ddrescue] ddrescue produces 0 bytes output

[Rogerio C. Schreiner]

No No, I'll never hate your opinions.

Thanks to Jay and thanks to Paul. To other readers too.

 

Reading all you posts, lets go by subject:

 

1) The drive in question is a Seagate FreeAgent Go - Part Number: 9KW2AH-500 (so you can google it)

 

2) I am connecting it to the USB port by the original cable, without any other resource like a bridge. Can you send me the link for the USB bridge to give me the idea? I do not know what the USB bridge is.

 

3) About temperature. It make ​​sense. I noticed two times, when the drive was not in use, that it was available for a longest time (~ 1 minute).

 

4) About temperature. You mean zip the drive in a plastic and put into a refrigerator at 7 celsius, letting the wire outside? Is my understanding right?

I will try this night under max air conditioner. At night it will not be so hot.

 

5) About connect directly to the SATA port. You mean open the case, take physical disk and connect it to a sata port?

What kind of cables do I need? Could you send me the link again to feel the idea?

I have a dell latitude E6410

 

Thanks in advance.

 

 

On Sat, 30 Mar 2013 21:46:29 -0400 (EDT)
Jay Ashworth <address@hidden> wrote:

> ----- Orig
> Rogerio is going to hate us.  :-)

    Let the debating begin... :)

> Don't *ever* try to do a drive recovery through a USB bridge: pull the
> drive out of the housing and hook it directly to a SATA port.  You
> can't trust a random USB bridge chip to have enough commands to do
> everything you need to do during a recovery.

    What sort of commands?  To date I've not had any problems with
    USB2 or USB3 external docking units.  I have found no troubles
    that I'm acutely aware of with powered USB external-drive
    enclosures either (Seagate); sometimes I have had hiccups with
    2.5" non-powered bridges, but that's somewhat to be expected
    due to the limited power, especially if the drive has a motor
    issue.  Overall I have found recovery via USB-bridges to be
    more dependable than eSATA or SATA directly, particularly if
    the drive resets frequently.  Though it's likely a
    kernel/driver issue I have found that when directly connected
    to the SATA interface I often have the drive become completely
    no-responsive to the system ( but reestablishes fine if you
    reboot ). 

    Different anecdotal evidence I suppose.

> I agree with cool, and you might find it worth freezing it, though
> you need to put it in a ziploc and press all the air out beforehand
> to avoid condensation.

    No matter how much you press out, there's still enough moisture
    in the atmosphere contained in the drive that you'll get
    condensation on the actual platters when you pull it out of the
    freezer. If you must freeze a drive, then I suggest doing so in
    a very low humidity environment. I prefer to keep it between
    5~10'C so as to avoid dropping below the dew point.

Paul.

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