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 Post subject: Head reading very slow
PostPosted: July 23rd, 2015, 6:45 
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Joined: July 23rd, 2015, 6:40
Posts: 68
Location: Austria
Hello, i've the atola insight usb 3.6

I'm trying to image an defective device, nothing new here...

I'll take the image, and just 1st block (4096 is lenght in moment) means there is an error - so ok...

but it takes very very long to image one block - i've 1TB Hdd on it, and it means that it will take 5000 hours to get ready :) - so i make the checkup - and can see the 2nd Head is not working fine... - so i turned off - but still the same, everything very slow ~40kb/s

do you think it's Board Problem? PreAMP? Or Heads itself?

something else i can try?


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 Post subject: Re: Head reading very slow
PostPosted: July 23rd, 2015, 7:23 
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Joined: February 9th, 2009, 16:13
Posts: 1907
Location: Ontario, Canada
Can you tell us the model of drive you are working with?

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 Post subject: Re: Head reading very slow
PostPosted: July 23rd, 2015, 7:55 
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Joined: July 23rd, 2015, 6:40
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Location: Austria
Of course...

It's a WD10JPVT 1TB Western Digital ;)

4 Heads, 2 Platters

Next question, do you know where to buy Heads directly? Or isn't there a way? - Because all HDD Producers means, thats not possible to get them seperatly?

And i think there is no universal head... am i right?


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 Post subject: Re: Head reading very slow
PostPosted: July 23rd, 2015, 9:50 
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Location: Pakistan
outbreak198x wrote:
Of course...

It's a WD10JPVT 1TB Western Digital ;)

4 Heads, 2 Platters

Next question, do you know where to buy Heads directly? Or isn't there a way? - Because all HDD Producers means, thats not possible to get them seperatly?

And i think there is no universal head... am i right?


yes there are no such "universal heads".
did you mean that imaging is slow under all 4 heads ?
did you check modules ?
was this disk dropped or what was the original problem ?

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 Post subject: Re: Head reading very slow
PostPosted: July 23rd, 2015, 10:01 
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Joined: July 23rd, 2015, 6:40
Posts: 68
Location: Austria
Imaging is slow with 1 Head 2 heads, it doesn't matter, it's always slow :)

You mean check the heads physically? (with modules?) or with atola, because atola Automatic Checkup does not finish this, hangs up on head 2... (maybe if i wait 1hour it would finish)

I can not really say whats the original problem, someone repaired the Notebook (if i remember correctly - MB change), after that everything works fine, some minutes later he told me that it's not working, and no partitions found and so on. - i think the person which repaird the notebook destroyed the Disk, but not sure how...

in worst case, i search a disk on ebay and change the heads for testing...


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 Post subject: Re: Head reading very slow
PostPosted: July 23rd, 2015, 10:16 
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Joined: February 9th, 2009, 16:13
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Location: Ontario, Canada
With your asking the questions about the heads and assuming that this is a client's drive, I don't recommend that you open the drive. It might be a firmware issue fixable with PC3K or it might require heads. You should consider outsourcing the project and practice on your own drives later.

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 Post subject: Re: Head reading very slow
PostPosted: July 23rd, 2015, 10:19 
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Location: Pakistan
outbreak198x wrote:
You mean check the heads physically? (with modules?) or with atola, because atola Automatic Checkup does not finish this, hangs up on head 2... (maybe if i wait 1hour it would finish)


am sorry am not aware with atola, never used it. I did't say check heads physically.
did you try imaging only with head 3 and head 4?

point is to know the behaviour of drive ! if imaging is same under all Heads, than it could be a different (Firmware/bad sector) problem and if you can image drive @ normal speed even with 1 head, it suggest head problem. can you check the firmware with atola ? different modules for possible corruption ?

good luck

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 Post subject: Re: Head reading very slow
PostPosted: July 23rd, 2015, 19:11 
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Joined: February 15th, 2006, 3:38
Posts: 1071
Location: canada
your using usb version it will be slower

plus you got one head damaged.

can you post a image of the report.


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 Post subject: Re: Head reading very slow
PostPosted: July 24th, 2015, 4:56 
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Joined: July 23rd, 2015, 6:40
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Location: Austria
i turned it off, waiting for another disk, change heads, and after that i'll check and write results ;)


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 Post subject: Re: Head reading very slow
PostPosted: July 25th, 2015, 9:22 
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Joined: February 13th, 2010, 9:44
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Location: san diego, ca.
Please heed Lukes advice- if you do not have cleanroom and head comb tools and experience at changing these heads do not open that customers drive- the probability of permanent data loss skyrockets.


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 Post subject: Re: Head reading very slow
PostPosted: July 26th, 2015, 4:36 
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Joined: February 15th, 2006, 3:38
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Location: canada
with out the correct tools your data going to be unrecoverable.

these drives are not that easy to work on

i would use the atola again and skip sectors with no data on it.


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 Post subject: Re: Head reading very slow
PostPosted: July 31st, 2015, 10:17 
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Joined: July 23rd, 2015, 6:40
Posts: 68
Location: Austria
Same Problem on another disk, changed the heads - and recovered all data :)

should work like that also here ;)


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 Post subject: Re: Head reading very slow
PostPosted: August 4th, 2015, 5:53 
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Joined: February 15th, 2006, 3:38
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Location: canada
wow so no issue at all your have to post on the steps you taken.
to help others.

thanks for the update.


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 Post subject: Re: Head reading very slow
PostPosted: August 4th, 2015, 9:07 
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Joined: August 18th, 2010, 17:35
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Location: Massachusetts, USA
outbreak198x wrote:
Same Problem on another disk, changed the heads - and recovered all data :)

should work like that also here ;)

Not necessarily. Data recovery is plagued with exceptions to common rules. And furthermore with specifics to the type and amount of damage pertaining to a particular drive.

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 Post subject: Re: Head reading very slow
PostPosted: August 6th, 2015, 5:29 
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Joined: July 23rd, 2015, 6:40
Posts: 68
Location: Austria
Yes, but it was OK by chaning the heads on this drive too :)


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 Post subject: Re: Head reading very slow
PostPosted: August 6th, 2015, 7:19 
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Joined: March 20th, 2010, 4:34
Posts: 256
Location: Turkey
labtech wrote:
Not necessarily. Data recovery is plagued with exceptions to common rules. And furthermore with specifics to the type and amount of damage pertaining to a particular drive.


+1,

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