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 Post subject: IO errors after head swap
PostPosted: February 10th, 2015, 21:21 
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Joined: January 7th, 2015, 5:40
Posts: 48
Location: London, England
Hi
WD10JMVW dropped causing damage to one of the four heads and not allowing the drive to initialise. Performed a head swap with donar and now drive is detected and partition info is available as are directory structures. Problem is most of the data seems to be on unreadable sectors.

Is this a sign of incompatible donar heads or a case that one of the platters that is not so visible has sustained damage from the failed head?

Thanks in advance for any pointers

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 Post subject: Re: IO errors after head swap
PostPosted: February 10th, 2015, 21:43 
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Joined: August 19th, 2007, 17:30
Posts: 1898
Location: In your hard drive.
You should use a compatible donor instead of a donar.

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 3:39 
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Joined: August 15th, 2006, 3:01
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Location: CDRLabs @ Chandigarh [ India ]
thatdellguy wrote:
You should use a compatible donor instead of a donar.


Yeah ,
Can You Tell Us What and How You Matched Your Donor

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 3:44 
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Joined: January 7th, 2015, 5:40
Posts: 48
Location: London, England
Thanks for the replies. What I'm asking is are these the symptoms of a mismatched doner

Cheers

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 3:47 
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Joined: August 15th, 2006, 3:01
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Location: CDRLabs @ Chandigarh [ India ]
myiannakou wrote:
Thanks for the replies. What I'm asking is are these the symptoms of a mismatched doner

Cheers


Well,
Thats What i am asking you tell us what and how you matched simple question

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 3:50 
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Joined: January 7th, 2015, 5:40
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Location: London, England
Ok sure. Matches exact
Model number plus digits 567 of second part of model number
If the drive has initialised and read the SA unwound have thought the heads were compatible no?

Thanks

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 3:53 
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Joined: August 15th, 2006, 3:01
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Location: CDRLabs @ Chandigarh [ India ]
myiannakou wrote:
Ok sure. Matches exact
Model number plus digits 567 of second part of model number
If the drive has initialised and read the SA unwound have thought the heads were compatible no?

Thanks


Well,
Check The Head From The Stack Assembly that Was Bad And Then Examine the Platter .Might Be It Has a Trace Of Damage .What Tools Are At Hand ?

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Amarbir S Dhillon , Chandigarh Data Recovery Labs [India]
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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 4:01 
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Joined: March 14th, 2014, 9:39
Posts: 61
Location: Macedonia, GREECE
Is model number is the only thing you checked for HSA compatibility? If this is the case, you sould research a bit more for HSA compatibility criteria. It's all there.


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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 5:45 
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Joined: December 17th, 2009, 22:57
Posts: 142
Location: Macedonia
What you use for reading SA? Are all modules OK or you have some bad? If you have bad modules try to repair them or upload from donor.
Also one of the heads can be bad or dirty. Put those heads back in donor and see if they still work.

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 6:00 
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Joined: January 7th, 2015, 5:40
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Location: London, England
I've not got a tool that can read the SA I'm just assuming it's been read successfully as the drive initialises and I can extract some data successfully from the drive. The problem is with this drive is it's come from a WD Passport and has the USB integrated. I would have to convert / bypass the USB to SATA in order for me to use my DFL-FRP (WD) to analyse the drive.

Have tried putting the heads back into the donor and thge donor drive works fine.

As well as matching the model number I also matched country of manufacture, DCM 4th,5th,6th and 7th character and also DOM within 3 months.

When I examined the patients drives heads I noticed that the 4th head was damaged so I'm thinking the IO errors are actually being caused by some damage to the bottom side of the second platter. In which case I'm guessing I would have to disable that head and read off the rest of the data if possible.

But to do this I would need to by-pass the USB bridge on the PCB of the drive.

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 6:22 
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Joined: December 17th, 2009, 22:57
Posts: 142
Location: Macedonia
DLF-FRP for WD should work with this USB drive SA. No need to bypass USB. If drive is recognized OK, use FRP to read from USB and check modules, probably you have few bad ones: SMART, G List, Relo List etc.
I hope you can use USB, if you solder SATA to it, you will deal with encryption after that.

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 6:58 
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Joined: January 7th, 2015, 5:40
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Location: London, England
No you can't plug a USB hard drive into DFL-FRP

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 7:28 
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Joined: December 17th, 2009, 22:57
Posts: 142
Location: Macedonia
myiannakou wrote:
No you can't plug a USB hard drive into DFL-FRP


No plug in to FRP device, plug WD in to regular USB3 port on the PC motherboard and when you start WD application select for source USB.
Check the manual, should be explained there.

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 7:42 
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Joined: November 29th, 2006, 10:08
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Location: UK
Heads are most likely compatible.

Looks like media damage, which is very difficult to overcome via USB :-(

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 9:59 
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Joined: February 9th, 2009, 16:13
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Location: Ontario, Canada
thatdellguy wrote:
You should use a compatible donor instead of a donar.

Maybe they meant Donair?

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 10:02 
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Location: Ontario, Canada
pcimage wrote:
Heads are most likely compatible.

Looks like media damage,

Agreed...most of the times when heads are bad, there is media damage to accompany, particularly after the drive was dropped.
Quote:
which is very difficult to overcome via USB :-(

This is what I love about the USB add-on for DDI 4.

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 10:40 
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Joined: January 7th, 2015, 5:40
Posts: 48
Location: London, England
So I'm guessing the only way to get to the data on the healthy platter sides is to switch off the head that relates to the faulty platter.

I may have to get hold of DDI's USB add-on to allow me to turn off the head via native USB calls, unless anyone has another suggestion. As for DFL-FRP WD it does not pick up USB drives full stop. The drive would have to be plugged into the DFL-FRP and that's not a supported option on these products.

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 11:43 
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Joined: April 3rd, 2011, 0:19
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Not to point out the obvious detail here, but you do realize that if you're reading via SATA from a Passport drive you're reading encrypted data. So if you are seeing the partition table as you say, it means you must have written some un-encrypted data to it???

I think you are in a bit over your head.

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 11:45 
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Joined: January 7th, 2015, 5:40
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I don't think so - I have a pretty big head

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 Post subject: Re: IO errors after head swap
PostPosted: February 11th, 2015, 13:56 
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Joined: November 29th, 2006, 10:08
Posts: 7864
Location: UK
data-medics wrote:
Not to point out the obvious detail here, but you do realize that if you're reading via SATA from a Passport drive you're reading encrypted data. So if you are seeing the partition table as you say, it means you must have written some un-encrypted data to it???

I think you are in a bit over your head.


Sorry, but am I missing something here?

I can't see that the OP is reading from SATA. :?

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