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 Post subject: Rosewood Heads Matching Issues
PostPosted: June 27th, 2018, 13:45 
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So I know we've all been using some typical parameters for matching heads, but it doesn't seem to always be working with these stupid Rosewood drives.

Normally I try as much as possible to match first part of p/n, first three of serial, preamp as read from terminal(or ROM), and as a last resort by slider topography. Yet, that's not seeming to be enough with some of these.

I've got one here that I'm getting killed by. The original drive had only a single failed head, so I know the SA is perfectly fine. Original heads put back into the drive still works each time.

Patient:
P/N: 1R8174-568
S/N: WCC...
Preamp: 82 12
Family: Rosewood_8C
Date: Aug 2016

Donor 1:
P/N: 1R8174-568
S/N: WDZ...
Preamp: 82 12
Family: Rosewood_A5 (I'm guessing this failed as donor because it's a different family despite having same preamp and part number)
Date: Dec 2016

Donor 2:
P/N: 1R8174-568
S/N: WCC....
Preamp: C2 12 (I didn't bother trying this donor since the preamp reads out as different in terminal)
Family: Rosewood_8C
Date: July 2016

Donor 3:
P/N: 1R8174-286
S/N: WCC...
Preamp: 82 12
Family: Rosewood_8C
Date: Oct 2016
(I have no idea why these heads aren't working in the patient)

I know I'm not killing the heads in my process, because when I put heads back in their original drives they all still work just fine. But I can't get any replacement heads to work in the patient, or patient heads (3/4 of which are good) to work in donor drives. As far as I can tell the slider topography is exactly the same across all drives (except the one I didn't open because it's got a different preamp.

Does anyone know something about these drives that I'm missing here? A different factor that must be matched perhaps?

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: June 27th, 2018, 14:36 
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Here's even the result of what the two drives show in terminal:

Patient:
Code:
F3 T>
RECOV Servo Op=0095 Resp=0005

CheopsAM.1.0.SATA.Rosewood.Mule.Servo376.Rap30.AP1.4K + SMR Des
Product FamilyId: 8C, MemberId: 01
HDA SN: WCC2A2JL, RPM: 5456, Wedges: 178, Heads: 4, OrigHeads: 4, Lbas: 00001D7D79FF, PreampType: 82 12
Bits/Symbol: C, Symbols/UserSector: CC1, Symbols/SystemSector: CB5
PCBA SN: 0000K704C5AW, Controller: CHEOPSM_1_0_SATA(1010), Channel: Unknown, PowerAsic: KONA Rev A443, BufferBytes: 8000000
SF ID: EF 14, SF Part Size: 400, Flash Used: 400
Package Version: RD075A.SDM2.AA6985.SBK2    , Package P/N: ---------, Package Global ID: 00080603,
Package Build Date: 04/01/2016, Package Build Time: 17:25:16, Package CFW Version: RD07.SDM2.01026051.00080603,
Package SFW1 Version: A5F6, Package SFW2 Version: ----, Package SFW3 Version: ----, Package SFW4 Version: ----
Controller FW Rev: 69850001, CustomerRel: SBK2, Changelist: 01026051, ProdType: RD07.SDM2, Date: 04/01/2016, Time: 172516, UserId: 00080603
Servo FW Rev: A5F8
TCG IV Version: 30.05
Package BPN: 7
RAP FW Implementation Key: 1E, Format Rev: 0208, Contents Rev: 3F 95 01 00
Active BFW Container: 0
4K Sys Area: 1
Features:
- Quadradic Equation AFH enabled
- VBAR with adjustable zone boundaries enabled
- Volume Based Sparing enabled
- IOEDC enabled
- IOECC enabled
- DERP Read Retries enabled v. 5.0.03.0000000000000003
- LTTC-UDR2 disabled
- SuperParity 4.1 enabled OTF OC enabled
   TotalSuperBlks     TotalValidSuperBlks
   00196723           0019649D
- UMP Zone Group 0004 to 0005
   TotalSuperBlks     ValidSuperBlks
   00004CDB           00004CDB
- Humidity Sensor disabled
- Media Cache Partition enabled
- Media Cache enabled
- Background Reli Activity Critical Event Logging disabled
- Low Current Spin Up Feature enabled
- Torn Write Protection enabled
- Zone Remap enabled[PLBA:00000000 Len:016238AE Offset:1BB425D1][PLBA:016238AE Len:1BB425D1 Offset:FE9DC752][PLBA:1D165E7F Len:00671B80 Offset:00000000][PLBA:1D7D79FF Len:00000001 Offset:00000000]
- AGB enabled
- SubRelease:0
- Critical Event Log v. 1
- Live Sensor enabled
- FAFH 36.1 enabled (collect)
- EWP:0
- DRAM Mirror:0



Donor 3 (closest matched):
Code:
F3 T>
HighPowerMode
XI2Status 0001 Req 0002
CheopsAM.1.0.SATA.Rosewood.Mule.Servo376.Rap30.AP1.4K + SMR Des
Product FamilyId: 8C, MemberId: 01
HDA SN: WCC2QWZX, RPM: 5456, Wedges: 178, Heads: 4, OrigHeads: 4, Lbas: 00001D7D79FF, PreampType: 82 12
Bits/Symbol: C, Symbols/UserSector: 0, Symbols/SystemSector: 0
PCBA SN: 0000K71203SQ, Controller: CHEOPSM_1_0_SATA(1010), Channel: Unknown, PowerAsic: KONA Rev A443, BufferBytes: 8000000
SF ID: 62 16, SF Part Size: 400, Flash Used: 400
Package Version: RD085A.SDM1.690114.SDM2    , Package P/N: ---------, Package Global ID: 00080603,
Package Build Date: 08/31/2016, Package Build Time: 18:39:18, Package CFW Version: RD08.SDM1.01099462.00080603,
Package SFW1 Version: A566, Package SFW2 Version: ----, Package SFW3 Version: ----, Package SFW4 Version: ----
Controller FW Rev: 01140001, CustomerRel: SDM2, Changelist: 01099462, ProdType: RD08.SDM1, Date: 08/31/2016, Time: 183918, UserId: 00080603
Servo FW Rev: A566
TCG IV Version: 30.05
Package BPN: 7
RAP FW Implementation Key: 1E, Format Rev: 0208, Contents Rev: 3F 86 01 00
Active BFW Container: 1
4K Sys Area: 1
Features:
- Quadradic Equation AFH enabled
- VBAR with adjustable zone boundaries enabled
- Volume Based Sparing enabled
- IOEDC enabled
- IOECC enabled
- DERP Read Retries enabled v. 5.0.03.0000000000000003
- LTTC-UDR2 disabled
- SuperParity 4.1 enabled OTF OC enabled
   TotalSuperBlks     TotalValidSuperBlks
   001830E0           00183069
- UMP Zone Group 0004 to 0005
   TotalSuperBlks     ValidSuperBlks
   00004652           00004652
- Humidity Sensor disabled
- Media Cache Partition enabled
- Media Cache enabled
- Background Reli Activity Critical Event Logging disabled
- Low Current Spin Up Feature disabled
- Torn Write Protection enabled
- Zone Remap enabled[PLBA:00000000 Len:015F642A Offset:1BB76AFB][PLBA:015F642A Len:1BB76AFB Offset:FEA09BD6][PLBA:1D16CF25 Len:0066AADA Offset:00000000][PLBA:1D7D79FF Len:00000001 Offset:00000000]
- AGB enabled
- SubRelease:0
- Critical Event Log v. 1
- Live Sensor enabled
- FAFH 36.1 uninitialized (deferred)
- EWP:0
- DRAM Mirror:0


Anyone see anything in there that would make the heads not compatible? I don't.

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: June 27th, 2018, 14:40 
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Joined: April 3rd, 2011, 0:19
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Location: Providence, RI
You know what, maybe it's this line here:

Code:
Servo FW Rev: A5F8

Code:
Servo FW Rev: A566


So they're actually now changing the servo every month. I'm going to have to start charging much higher rates to deal with this crap.

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: June 27th, 2018, 17:43 
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Joined: August 15th, 2006, 3:01
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Well,
This all matching is nonsense in rosewoods .Try using HDDsurgery Tools Sometimes :mrgreen: . Next Time Try The C2 Heads in 82 Also :lol: . Also When the Preamp Matches Why The Heck Do you want to match other parameters ? . Also go easy on that top head screw ,Do not over tighten the poor baby it chokes :D

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: June 28th, 2018, 10:10 
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Amarbir[CDR-Labs] wrote:
Well,
This all matching is nonsense in rosewoods .Try using HDDsurgery Tools Sometimes :mrgreen: . Next Time Try The C2 Heads in 82 Also :lol: . Also When the Preamp Matches Why The Heck Do you want to match other parameters ? . Also go easy on that top head screw ,Do not over tighten the poor baby it chokes :D


I actually did try the C2 heads (since the servo rev of that one matched) and it didn't work either. As I said before, all heads work perfectly back in their original drives. So obviously there is no problem with my head replacing process. Your comment is just nonsense!

I'd never waste my hard earned money on those worthless overpriced tools. Apex tools are working great, I've now done around 20 rosewood head swaps and haven't ruined a set of heads that way yet. The issue with this case is 100% related to heads compatibility. If you'd actually read any of my posts you'd have figured that out.

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: June 28th, 2018, 15:36 
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Joined: August 15th, 2006, 3:01
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Location: CDRLabs @ Chandigarh [ India ]
data-medics wrote:
Amarbir[CDR-Labs] wrote:
Well,
This all matching is nonsense in rosewoods .Try using HDDsurgery Tools Sometimes :mrgreen: . Next Time Try The C2 Heads in 82 Also :lol: . Also When the Preamp Matches Why The Heck Do you want to match other parameters ? . Also go easy on that top head screw ,Do not over tighten the poor baby it chokes :D


I actually did try the C2 heads (since the servo rev of that one matched) and it didn't work either. As I said before, all heads work perfectly back in their original drives. So obviously there is no problem with my head replacing process. Your comment is just nonsense!

I'd never waste my hard earned money on those worthless overpriced tools. Apex tools are working great, I've now done around 20 rosewood head swaps and haven't ruined a set of heads that way yet. The issue with this case is 100% related to heads compatibility. If you'd actually read any of my posts you'd have figured that out.



Well,
Get in touch with me in messenger or something i will talk about this in detail with you and make you understand this concept .I do 2 to 3 rosewoods a day .Today itself i purchased a stack of 10 brand new drives for rosewoods .You just need to understand how this crap drive work physically .Servo Rev has nothing to do with the heads ,What are you upto ,Servo is embedded into platters not into heads :lol: .My comment is not nonsense its priced at 100000 dollars :mrgreen: :mrgreen: :mrgreen:

PS : One more thing just try the so called overprice tool once and then you will know what we are talking about .Those E Tools Are GARBAGE .They do more damage then you can possibly imagine .Wanna Take This Challenge With Me right here in HDDGURU ? On Tools ,Welcome Anytime ,I had The Same View As Yours All Thanks To Nikola Sir its Changed .

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: June 28th, 2018, 15:42 
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Posts: 995
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From my understanding servo data is written to the platters with the heads in place (unless it has changed since someone explained this). So I can presume it is possible for the way/type of servo data to change which may not be read with different heads. I am not 100% certain of this so would appreciate your input.

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: June 28th, 2018, 15:45 
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ddrecovery wrote:
From my understanding servo data is written to the platters with the heads in place (unless it has changed since someone explained this). So I can presume it is possible for the way/type of servo data to change which may not be read with different heads. I am not 100% certain of this so would appreciate your input.


Question ,
When Head Preamp is Same Then Why Would it Not ?

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: June 28th, 2018, 15:50 
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I think we are all shooting in the dark here a little until we know more about these drives. The issue maybe something totally unrelated to pre-amp or any know parameter. I am sure we will learn more at time goes by.

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: June 28th, 2018, 15:52 
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ddrecovery wrote:
I think we are all shooting in the dark here a little until we know more about these drives. The issue maybe something totally unrelated to pre-amp or any know parameter. I am sure we will learn more at time goes by.


Well,
this is why i told jared to get in touch you too can i can share my research with you man no issues on this

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: July 4th, 2018, 4:43 
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Joined: December 12th, 2005, 3:32
Posts: 647
Location: Belgrade
Here is a list of drives we recovered
http://firmware.hddsurgery.com/?manufac ... osewood_8C
and
http://firmware.hddsurgery.com/?manufac ... osewood_A5

In Data recovery it is not what you know but who you know ( more then in any other field )
When you burn all the bridges behind , you end up with the problem and over priced service. Witch leads to less job less money less knowledge.
We recover 95% of them with one donor ( 5% come with a scratch )

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: July 4th, 2018, 7:05 
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give me all ROMs from this drives

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: July 4th, 2018, 23:03 
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I had similar issue. I just check several other donor heads and found good one for this particular drive. I don't see any big problems with rosewoods.


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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: July 6th, 2018, 12:09 
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drHDD wrote:
I had similar issue. I just check several other donor heads and found good one for this particular drive. I don't see any big problems with rosewoods.


Wayne ,
Please elaborate what you said ?.

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: July 6th, 2018, 12:12 
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Amarbir[CDR-Labs] wrote:
drHDD wrote:
I had similar issue. I just check several other donor heads and found good one for this particular drive. I don't see any big problems with rosewoods.


Wayne ,
Please elaborate what you said ?.

I don't think his name is Wayne.....

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: July 6th, 2018, 12:19 
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ddrecovery wrote:
Amarbir[CDR-Labs] wrote:
drHDD wrote:
I had similar issue. I just check several other donor heads and found good one for this particular drive. I don't see any big problems with rosewoods.


Wayne ,
Please elaborate what you said ?.

I don't think his name is Wayne.....


Well,
What is his name tim ?

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: July 6th, 2018, 12:23 
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Posts: 995
Location: USA
Amarbir[CDR-Labs] wrote:
ddrecovery wrote:
Amarbir[CDR-Labs] wrote:
drHDD wrote:
I had similar issue. I just check several other donor heads and found good one for this particular drive. I don't see any big problems with rosewoods.


Wayne ,
Please elaborate what you said ?.

I don't think his name is Wayne.....


Well,
What is his name tim ?

I am sure if he wants you to know it he will tell you.

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: July 6th, 2018, 12:29 
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Well,
i used to think he is from alandata data recovery and his name is wayne horner .Might be i am wrong might b i am correct .Might be this is erkin from canada .Anyways my question to him was totally diff ,thanks tim for correcting me :)

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: July 6th, 2018, 13:05 
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Amarbir[CDR-Labs] wrote:
Well,
i used to think he is from alandata data recovery and his name is wayne horner .Might be i am wrong might b i am correct .Might be this is erkin from canada .Anyways my question to him was totally diff ,thanks tim for correcting me :)

Many people do not want to be named on forums. If they have a signature like we do, then they do not care if they are named. But others have many reasons not to want to be named. They may work for large DR company and it might be against company policy to go onto forums to help others out, so naming them might get them fired. Others might not offer advice if they know who the OP works for etc. So its generally bad form to name people and companies on forums.

Just sayin...... :wink:

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 Post subject: Re: Rosewood Heads Matching Issues
PostPosted: July 7th, 2018, 9:33 
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ddrecovery wrote:
Amarbir[CDR-Labs] wrote:
Well,
i used to think he is from alandata data recovery and his name is wayne horner .Might be i am wrong might b i am correct .Might be this is erkin from canada .Anyways my question to him was totally diff ,thanks tim for correcting me :)

Many people do not want to be named on forums. If they have a signature like we do, then they do not care if they are named. But others have many reasons not to want to be named. They may work for large DR company and it might be against company policy to go onto forums to help others out, so naming them might get them fired. Others might not offer advice if they know who the OP works for etc. So its generally bad form to name people and companies on forums.

Just sayin...... :wink:


Yes,
Right Observation and advice

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