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 Post subject: Anonymus WD 3,5" missing label
PostPosted: October 17th, 2018, 6:36 
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Joined: September 14th, 2018, 13:41
Posts: 51
Location: italy
hi guys, a customer brought me a 3.5 "open WD hdd.The customer claims to have opened the HDD after a fall, the problem is that he threw the hard disk label and I do not know how to find a donor for a head SWAP .What do you recommend? connecting it to MRT this is what I can read: Technology mode key: ..........................: OK

RAM:
Read HDD Info: ................................: OK
Heads number: .................................: 4
Head map: .....................................: F
SA Cyl Count: .................................: 170
Serials Mark: .................................: 0x9D16
Control version: ..............................: 45D0

Zone allocation table: ........................: Err

ROM:
Read Rom Infos: ...............................: OK
ROM Data Size: ................................: 192 Kb
ROM version: ..................................: 05.APE
ROM generation: ...............................: 05.APE
Link table version: ...........................: 04.AD
ROM Firmware version: .........................: 000500AP

ROM Modules:
Flash ROM dir reading: ........................: OK
Switched off heads: ...........................: Yes
Heads number: .................................: 0x4
Heads number in use: ..........................: 0x4
heads map: ....................................: 0,1,2,3


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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 17th, 2018, 7:03 
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Joined: December 8th, 2013, 4:48
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Location: Pakistan
MRT should recognize the family of the drive, thats what you need to start with.

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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 17th, 2018, 7:14 
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Joined: October 21st, 2007, 8:48
Posts: 1275
Try to find a Kermit with 4 heads ( ex. WD10EAVS-00D7B1 )

Good luck


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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 17th, 2018, 7:50 
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Joined: September 14th, 2018, 13:41
Posts: 51
Location: italy
Yes it's Atlantis family it's a 640 gb HDD, this say the customer. The very problem is found a donor for head, I don't know how


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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 17th, 2018, 8:00 
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Joined: October 21st, 2007, 8:48
Posts: 1275
ROM version is tricky. :)
Atlantis or Kermit.

Good luck


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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 17th, 2018, 10:01 
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Joined: January 28th, 2009, 10:54
Posts: 2790
Location: Greece
Quote:
Switched off heads: ...........................: Yes
Heads number: .................................: 0x4
Heads number in use: ..........................: 0x4
heads map: ....................................: 0,1,2,3


????

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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 17th, 2018, 14:31 
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Joined: September 14th, 2018, 13:41
Posts: 51
Location: italy
do not understand what you mean


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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 17th, 2018, 14:34 
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Joined: May 5th, 2004, 20:06
Posts: 2800
Location: England
!!??? :lol:

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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 17th, 2018, 14:35 
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Joined: December 19th, 2006, 8:49
Posts: 9869
Location: Portugal
magnetepazzo wrote:
do not understand what you mean


MRT is telling that you have Switched off heads (YES) but then it tells you that you have 4 physical heads, all of them (4) are in use and the head map does have the 4 heads so .... how do you have Switched off heads ? :shock:

:lol: :lol: :lol:

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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 17th, 2018, 14:36 
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Location: Portugal
guru wrote:
!!??? :lol:



:mrgreen: :mrgreen: :mrgreen:

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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 17th, 2018, 14:38 
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Joined: October 21st, 2007, 8:48
Posts: 1275
Working with Dragfly1 now :
Technology mode key : ..........................: OK

RAM:
Read HDD Info : ................................: OK
Heads number : .................................: 2
Head map : .....................................: 3
SA Cyl Count : .................................: 192
Serials Mark : .................................: 0xD916
Control version : ..............................: 53B1

Zone allocation table : ........................: OK
SA SPT : .......................................: 1980

ROM:
Read Rom Infos : ...............................: OK
ROM Data Size : ................................: 192 Kb
ROM version : ..................................: 90.95R
ROM generation : ...............................: 90.96R
Link table version : ...........................: 04.0F
ROM Firmware version : .........................: 00900095

ROM Modules:
Flash ROM dir reading : ........................: OK
Switched off heads : ...........................: Yes
Heads number : .................................: 0x2
Heads number in use : ..........................: 0x2
heads map : ....................................: 0,1

SA Module Dir Loading...
Load SA Module dir : ...........................: OK
Configuration reading : ........................: OK
Master Password : ..............................: has not been set
User Password : ................................: has not been set

:lol: :lol: :lol: :lol: :lol: :lol: :lol:


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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 17th, 2018, 14:44 
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Joined: December 19th, 2006, 8:49
Posts: 9869
Location: Portugal
RAM:
Read HDD Info : ................................: OK
Heads number : .................................: 2
Head map : .....................................: 3

Maybe it's related to this bug :

http://www.hddoracle.com/viewtopic.php?f=228&t=2593

"maybe" MRT does tell you that you have Switched off heads because it does have a "problem" detecting and changing the head map in RAM ?

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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 18th, 2018, 1:45 
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Joined: September 30th, 2005, 7:33
Posts: 617
Ask your customer about the colour of the label. If it was blue the family is Atlantis, If it was green - Kermit. The heads are the same, only speed is different.


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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 18th, 2018, 2:21 
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BGman wrote:
The heads are the same, only speed is different.

I'm not suggesting that you are wrong, but my question would be, if the heads are identical, and if the RPM is different, then wouldn't the heads fly higher in the 7200 RPM drive?

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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 18th, 2018, 2:31 
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Joined: September 14th, 2018, 13:41
Posts: 51
Location: italy
Yes it's Atlantis, I wonder, is it enough just the family to find compatible heads? for the seagate disks I had to match with the exact model, and not only. is it different for wd?


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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 18th, 2018, 2:36 
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Joined: May 5th, 2004, 20:06
Posts: 2800
Location: England
Good point, as velocity increases so must the pressure. With the increase in pressure, the separation between the head and media can be increased.



fzabkar wrote:
BGman wrote:
The heads are the same, only speed is different.

I'm not suggesting that you are wrong, but my question would be, if the heads are identical, and if the RPM is different, then wouldn't the heads fly higher in the 7200 RPM drive?

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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 18th, 2018, 7:51 
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Joined: December 5th, 2011, 5:38
Posts: 1173
Location: Italy
northwind wrote:
Quote:
Switched off heads: ...........................: Yes
Heads number: .................................: 0x4
Heads number in use: ..........................: 0x4
heads map: ....................................: 0,1,2,3


????


it's just a stupid mrt bug, it always say in the log that heads are off.

See example:
Attachment:
switched off bug in mrt log.jpg
switched off bug in mrt log.jpg [ 322.25 KiB | Viewed 1168 times ]


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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 18th, 2018, 10:35 
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Joined: September 30th, 2005, 7:33
Posts: 617
If the drive passes tests at 7200RPM they make it Atlantis, if not they changes FW to run at 5400RPM as Kermit. You can find the head model at C5 module (as well as family name) or head code at module 0A of ROM.


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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 18th, 2018, 12:00 
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Joined: April 3rd, 2011, 0:19
Posts: 1870
Location: Providence, RI
For a case like this, I'd compare the serial number (which should be on a sticker on the bottom of the drive) with other donors of the same family. That'll get you pretty close.

I see in my resources some 00500AP firmware versions with serial numbers around WCASY37... I'd bet yours is close to that, so just aim for an Atlantis family drive with similar serial and you'll probably get the heads you need.

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 Post subject: Re: Anonymus WD 3,5" missing label
PostPosted: October 19th, 2018, 18:24 
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Joined: September 14th, 2018, 13:41
Posts: 51
Location: italy
data-medics wrote:
For a case like this, I'd compare the serial number (which should be on a sticker on the bottom of the drive) with other donors of the same family. That'll get you pretty close.

I see in my resources some 00500AP firmware versions with serial numbers around WCASY37... I'd bet yours is close to that, so just aim for an Atlantis family drive with similar serial and you'll probably get the heads you need.


This is the serial found on the side : Wmasy3943080


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