optional names for Western digital portable HDD

[sved666]

Hello all,
Does anybody know, how the Westen digital marked their old USB external 2.5" hard drives.
I need buy this exact model WD7500KMVW-11ZSMS4 (USB 750GB portable Western digital 2.5" hard drive) and can not find optional name for it. I do not have plastic cover from it and do not know if it was called somehow else...
Can someone help me please.

Thank you in advanced.

[sved666]

I will try to ask otherwise. I need change heads on mentioned USB portable hard drive(screenshot attached). From what portable HDD, Could I use heads to mine? Could I use heads from any kind of HDD? Or has to be used only from the same drive model? Please advise me....

Attachments

[solosdk]

By the looks of it, theres no different optional numbers. Just need to find the same drive online (try and get the date near each other, eg. JAN 2012

[sved666]

I found couple on http://www.ebay.com/itm/Western-Digital-WD7500KMVW-11ZSMS4-USB-3-0-750GB-DCM-HHMTJBB-/181152892611?pt=US_Internal_Hard_Disk_Drives&hash=item2a2d8dc6c3, but every of them is from sept 2012. could I use it?

[sved666]

I found couple on eBAY, but every of them is from Sept 2012. Could I use it?

[Doomer]

Sounds like you don't have enough experience for the job.
You could use the same model drive as a donor but would it work? That's the question that can be answered only by a person with experience. And that's the job that should be paid for.
In short - the best thing you can do is to send it to a pro

[sved666]

Sounds like you don't have enough experience for the job.
You could use the same model drive as a donor but would it work? That's the question that can be answered only by a person with experience. And that's the job that should be paid for.
In short - the best thing you can do is to send it to a pro

It is in "pro" hands, but they don't have heads for my model. I have to deliver the same drive model, so I am trying to find out information if I can use only the same model...
Also On ebay is little bit expensive, I don not understand why. The cost of the drive was about 80 euros when I bought it last year.

[Doomer]

1. doesn't sound like a pro to me

2. There is generally no way to tell what's inside the USB box unless you have the drive in your hands.
ebay is expensive because people there blindly buy a bunch of external drives, crack them open and provide all information about the drive inside and wait for a right buyer

[sved666]

There is generally no way to tell what's inside the USB box unless you have the drive in your hands.

I think, Because of it the disks are marked with model names like mine is WD7500KMVW-11ZSMS4 . This name should indicate what is inside. If am I wrong sorry, but for other products it is so.... My Only question is what the label in second part of it indicate? I need only heads, nothing else and I found the same model WD7500KMVW but second part of the label is 11SZMS1 which is much cheaper than 11ZSMS4. Both are USB, both are 750 GB , 2,5" but the question is: What is different? Are the same type of heads in model 11ZSMS1 as they are in 11ZSMS4 or different? or what is difference between this two models of disks? I hope you understand what is my point of the discussion.... Thanks for every answer...

[BGman]

1. doesn't sound like a pro to me

A pro would be interested in ROM's modules 0A and 47 rather then drive's label.

[Doomer]

1. doesn't sound like a pro to me

A pro would be interested in ROM's modules 0A and 47 rather then drive's label.

Some guys think the know a lot if they read ACE manual, it's good for the business of real pro.

[sved666]

Hello guys,
I really do not think it's too important to know

ROM's module

to find the same model of harddrive for heads swapping. As I looked up hardware construction should be indicated by DCM number (Drive Configuration Matrix) as it was published here:

http://forum.hddguru.com/viewtopic.php?f=1&t=6488

which is used for specifying head types, media, pre-amp etc. The question is only if there is newer matrix version for a newer harddrives or is still valid information that sixth position identifies headstacks?! Does anybody know this information?

[hddguy]

Hello guys,
I really do not think it's too important to know

ROM's module

to find the same model of harddrive for heads swapping. As I looked up hardware construction should be indicated by DCM number (Drive Configuration Matrix) as it was published here:

http://forum.hddguru.com/viewtopic.php?f=1&t=6488

which is used for specifying head types, media, pre-amp etc. The question is only if there is newer matrix version for a newer harddrives or is still valid information that sixth position identifies headstacks?! Does anybody know this information?

All of this is irrelevant. Doomer is right, you need a professional. If it is already with a 'professional' get it back and send to someone reputable.

For this model, there are alternative (and eaiser to source) parts within the same family, some even outside the same family, but it is this knowledge and expertise that you get with a real professional.

[pcimage]

Hello guys,
I really do not think it's too important to know

ROM's module

to find the same model of harddrive for heads swapping. As I looked up hardware construction should be indicated by DCM number (Drive Configuration Matrix) as it was published here:

http://forum.hddguru.com/viewtopic.php?f=1&t=6488

which is used for specifying head types, media, pre-amp etc. The question is only if there is newer matrix version for a newer harddrives or is still valid information that sixth position identifies headstacks?! Does anybody know this information?

All of this is irrelevant. Doomer is right, you need a professional. If it is already with a 'professional' get it back and send to someone reputable.

For this model, there are alternative (and eaiser to source) parts within the same family, some even outside the same family, but it is this knowledge and expertise that you get with a real professional.

+1

[sved666]

Guys

do you really think that exist "real professional" which own all spare parts for all type of hard drives? I do not ask you if I gave my hard drive to good hands. As I already said, I will not swap heads, I just need buy new compatible hard drive, because professional or however we will call the firm I believe in does not have donor hard drive for me and also will order it via internet.
Also I am trying to learn something new for me and I'm asking you simple questions to you as experienced people, but you still give me an answer like to child, do not do that... Please, if you do not know answer on my simple questions, rather answer nothing , because answer give it to pro does not putting me forward ....

[hddguy]

I have multiple variants of this model as parts, and if I didnt I would find no trouble finding one to purchase.

I accept that your not going to change the heads yourself, but if you want my opinion dont leave the disk with whoever it is with. If they cannot find a donor part they are obviously not so experienced in WD physical repairs, and probably your data is safer with someone who has more experience.

For this specific model, there are good donors in alternate models, alternate families and to some extent slight variations on capacity assuming head map remains consistent and compatible. But identification of the parts is only half the battle, heads need to be exchanged and then there are generally a bucketload of complications, extraction of the data cannot be done on standard equipment with standard software because of stability issues which are common on near enough all cases like this. To further complicate it, it has native USB interface which can be difficult to work with, converted to SATA it is encrypted by AES...

If your happy with how things are going, and your sure your data is in good hands, then good luck with it. But otherwise, find someone else who can really help you.

[sved666]

I have multiple variants of this model as parts, and if I didnt I would find no trouble finding one to purchase.

I accept that your not going to change the heads yourself, but if you want my opinion dont leave the disk with whoever it is with. If they cannot find a donor part they are obviously not so experienced in WD physical repairs, and probably your data is safer with someone who has more experience.

For this specific model, there are good donors in alternate models, alternate families and to some extent slight variations on capacity assuming head map remains consistent and compatible. But identification of the parts is only half the battle, heads need to be exchanged and then there are generally a bucketload of complications, extraction of the data cannot be done on standard equipment with standard software because of stability issues which are common on near enough all cases like this. To further complicate it, it has native USB interface which can be difficult to work with, converted to SATA it is encrypted by AES...

If your happy with how things are going, and your sure your data is in good hands, then good luck with it. But otherwise, find someone else who can really help you.

It sounds to me like you are the pro for WD products, but if you are real professional, than simply provide exact, valuable help to the world. When you have got the multiple parts, and especially headstacks for example for my drive, why do not you simply say? "
Hey, helloo, I have what are you looking for, you have to buy this type, with that DCM and etc. If you want I have it and can sell it to you. or you just look it up here or there to find it....
I know I can buy it from ebay there is couple of them, but which one is compatible for mine? If you know than advise me one and tell why this one, and do not tell me that label codes mean nothing.

Maybe you did couple of successful changes and recoveries but do not want share your know-how to the world.
After all, I am not interesting in how to successfully swap heads or board or whatever, its job for real prof. , but it is at least interesting to know how the products are labelled and what the letters/digit means in the code...

[hddguy]

It sounds to me like you are the pro for WD products, but if you are real professional, than simply provide exact, valuable help to the world. When you have got the multiple parts, and especially headstacks for example for my drive, why do not you simply say? "

Because there is more involved than simply saying "this one works":

I dont want to encourage DIY attempts as these models are not easy to work with even for experienced professionals

This knowledge you want shared it earned through tests, research, time and persistence

This is the kind of knowledge you would expect from a professional DR outfit, whoever has your model clearly does not know this, yet still operates on clients media on the promise that they can. (I am making assumptions based on your posts)

there are many others in this forum more experienced than me in WD, which reinforces my advice to seek someone reputable to handle this for you.

[sved666]

It sounds to me like you are the pro for WD products, but if you are real professional, than simply provide exact, valuable help to the world. When you have got the multiple parts, and especially headstacks for example for my drive, why do not you simply say? "

Because there is more involved than simply saying "this one works":

I dont want to encourage DIY attempts as these models are not easy to work with even for experienced professionals

This knowledge you want shared it earned through tests, research, time and persistence

This is the kind of knowledge you would expect from a professional DR outfit, whoever has your model clearly does not know this, yet still operates on clients media on the promise that they can. (I am making assumptions based on your posts)

there are many others in this forum more experienced than me in WD, which reinforces my advice to seek someone reputable to handle this for you.

So you claim that professionals needs research to find out what type of head stack is used in? and there is no other way how to find out it? in 21st century? then you are saying that producers assembly products randomly and do not record information about used parts ? come on...
by the way who is reputable professional for you? Please advise

[hddguy]

So you claim that professionals needs research to find out what type of head stack is used in? and there is no other way how to find out it? in 21st century? then you are saying that producers assembly products randomly and do not record information about used parts ? come on...
by the way who is reputable professional for you? Please advise

This isnt a training program, Im not here to educate you. Think what you want, believe what you want, and trust your data with whoever you want. Whether you get your data recovered or not is no bother to me, ultimately its your own problem. I tried to help, I offered advice but it seems like your only interest is to contradict what I say.

If it helps you, vendors do NOT want their drives recovered because it involves reverse engineering of proprietary information in order to fully understand how they work. This is why every revision of HDD is more complex than the last and most SSD drives are encrypted.

21st century or not, its the way it is.

Ive given my opinion, told you what you should do. Im done here now.