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how change seagate head map with hex editor?

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fzabkar

Post subject: Re: how change seagate head map with hex editor?

Posted: October 5th, 2017, 16:18

Joined: September 8th, 2009, 18:21
Posts: 15528
Location: Australia

labtech wrote:

Like just about everything else in the world, not all Seagate product lines are junk. The low end cheap models are. Seagate makes them with cheap components, so people can afford them.

Whoever does not want junk, then should buy something expensive, as, statistically, quality will be better.

Which of Seagate's product lines are not built with cheap components, and how can the end user recognise the difference?

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mmzhr

Post subject: Re: how change seagate head map with hex editor?

Posted: October 5th, 2017, 16:33

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Joined: May 11th, 2017, 17:10
Posts: 236
Location: Iran

fzabkar wrote:

labtech wrote:

Which of Seagate's product lines are not built with cheap components, and how can the end user recognise the difference?

yes we cannot buy made in usa products how we reconize quality drives?

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fzabkar

Post subject: Re: how change seagate head map with hex editor?

Posted: October 5th, 2017, 17:20

Joined: September 8th, 2009, 18:21
Posts: 15528
Location: Australia

mmzhr wrote:

how calcualte checksum plese help me

See https://github.com/eurecom-s3/hdd_firmw ... master.zip

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fzabkar

Post subject: Re: how change seagate head map with hex editor?

Posted: October 5th, 2017, 17:27

Joined: September 8th, 2009, 18:21
Posts: 15528
Location: Australia

The following serial number prefixes would suggest that there are no head/media differences between the respective consumer and enterprise grade models. Has anything changed today?

7200.11
-------
ST3500320AS --- 5QM 6QM 9QM
ST3750330AS --- 3QK 5QK 9QK
ST31000340AS --- 5QJ 6QJ 9QJ

ES.2
----
ST3500320NS --- 5QM 9QM
ST3750330NS --- 3QK 9QK
ST31000340NS --- 9QJ

ES.2 SAS
--------
ST31000640SS --- 9QJ

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mmzhr

Post subject: Re: how change seagate head map with hex editor?

Posted: October 5th, 2017, 17:37

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Joined: May 11th, 2017, 17:10
Posts: 236
Location: Iran

fzabkar wrote:

mmzhr wrote:

how calcualte checksum plese help me

See https://github.com/eurecom-s3/hdd_firmw ... master.zip

thanks

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mmzhr

Post subject: Re: how change seagate head map with hex editor?

Posted: October 5th, 2017, 17:38

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fzabkar wrote:

vey useful thanks

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labtech

Post subject: Re: how change seagate head map with hex editor?

Posted: October 5th, 2017, 18:24

Joined: August 18th, 2010, 17:35
Posts: 3637
Location: Massachusetts, USA

mmzhr wrote:

fzabkar wrote:

labtech wrote:

Which of Seagate's product lines are not built with cheap components, and how can the end user recognise the difference?

yes we cannot buy made in usa products how we reconize quality drives?

Off the top of my head: by model line (e.g. enterprise vs entry level), by understanding the technology and intended use (e.g. NAND quality ranking, green economy technology vs server 24/7), trusted reviews, etc.
There is a quality classification in just about everything.
The simplest way to recognize is by price. There is a reason why there are various prices.

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fzabkar

Post subject: Re: how change seagate head map with hex editor?

Posted: October 5th, 2017, 18:42

Joined: September 8th, 2009, 18:21
Posts: 15528
Location: Australia

labtech wrote:

The simplest way to recognize is by price. There is a reason why there are various prices.

What is the reason that external drives often (usually?) cost a lot less than the exact same internal drives?

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labtech

Post subject: Re: how change seagate head map with hex editor?

Posted: October 5th, 2017, 18:52

Joined: August 18th, 2010, 17:35
Posts: 3637
Location: Massachusetts, USA

fzabkar wrote:

labtech wrote:

The simplest way to recognize is by price. There is a reason why there are various prices.

What is the reason that external drives often (usually?) cost a lot less than the exact same internal drives?

Don't endorse it, but it is simply a method of leveraging perception (based on lack of awareness) to maximize sales. If people are stupid through laziness and likeness in living misinformed and believe everything at face value, then hey, these guys capitalize on it. There is always a sucker out there. Solution: "Stop being stupid!", by Dick Gregory, RIP.

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labtech

Post subject: Re: how change seagate head map with hex editor?

Posted: October 5th, 2017, 19:16

Joined: August 18th, 2010, 17:35
Posts: 3637
Location: Massachusetts, USA

fzabkar wrote:

There are additional components and design tweaks to those of heads and media that could make a significant difference.
http://www.seagate.com/files/www-conten ... torage.pdf
Needless to say, I don't believe a manufacturer, nor any business, can possibly test a model drive in all possible aspects m/billions of different users can test cumulatively. Hence, there is a lot of simulation and so on.

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fzabkar

Post subject: Re: how change seagate head map with hex editor?

Posted: October 5th, 2017, 20:38

Joined: September 8th, 2009, 18:21
Posts: 15528
Location: Australia

labtech wrote:

There are additional components and design tweaks to those of heads and media that could make a significant difference.
http://www.seagate.com/files/www-conten ... torage.pdf

Interesting read, thanks. However I get the impression that, aside from firmware, much of the differences are of a select-on-test nature. That is, many of the components are essentially identical, with the better performing ones being diverted to the enterprise market.

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mmzhr

Post subject: Re: how change seagate head map with hex editor?

Posted: October 6th, 2017, 11:52

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Joined: May 11th, 2017, 17:10
Posts: 236
Location: Iran

New Discovered Offsets

CAP

Offset 6166d --> Capacity ID
Offset 61662 --> Number of Heads
Offset 61682 --> Number of Heads
Offset 61774 - 61777 --> Capacity Size (Number of LBAs)

RAP
Offset 6192C - 6192F --> Capacity Size (Number of LBAs)
Offset 61B03 --> Head Map

SAP

Offset 7E01A --> Max Heads

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mmzhr

Post subject: Re: how change seagate head map with hex editor?

Posted: October 6th, 2017, 15:43

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Joined: May 11th, 2017, 17:10
Posts: 236
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Spildit wrote:

Just don't buy Seagate. Buy HGST instead.

hgst and toshiba make crap drives i test and all of this brands is crap
i choose western digital

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mmzhr

Post subject: Re: how change seagate head map with hex editor?

Posted: October 6th, 2017, 17:56

Banned User

Joined: May 11th, 2017, 17:10
Posts: 236
Location: Iran

Spildit wrote:

mmzhr wrote:

Spildit wrote:

Just don't buy Seagate. Buy HGST instead.

hgst and toshiba make crap drives i test and all of this brands is crap
i choose western digital

WD have crap drives as well.

seagate is crap wdc is crap hgst is crap toshiba is crap :roll:

hdd industry is crap :roll:

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mmzhr

Post subject: Re: how change seagate head map with hex editor?

Posted: October 7th, 2017, 14:12

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Joined: May 11th, 2017, 17:10
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i'm joking :lol:

i like hdd and ssd

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mmzhr

Post subject: Re: how change seagate head map with hex editor?

Posted: October 7th, 2017, 14:36

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Joined: May 11th, 2017, 17:10
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Spildit wrote:

mmzhr wrote:

i'm joking :lol:

i like hdd and ssd

So ... Go buy PC-3000 !

pc3000 price is 3000 $
3000 x 4000 Tooman = 12000000 Tooman :shock:

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mmzhr

Post subject: Re: how change seagate head map with hex editor?

Posted: October 7th, 2017, 14:46

Banned User

Joined: May 11th, 2017, 17:10
Posts: 236
Location: Iran

Spildit wrote:

mmzhr wrote:

Spildit wrote:

mmzhr wrote:

i'm joking :lol:

i like hdd and ssd

So ... Go buy PC-3000 !

pc3000 price is 3000 $
3000 x 4000 Tooman = 12000000 Tooman :shock:

Should be way more expensive .... Should be near $6000 USD.

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mmzhr

Post subject: Re: how change seagate head map with hex editor?

Posted: October 7th, 2017, 14:58

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Joined: May 11th, 2017, 17:10
Posts: 236
Location: Iran

Spildit wrote:

If you want to be a good PRO you need to buy it. NOW !!!

i dont have 6000 $ iranian people suffer hard life salary is 200 $/month

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fzabkar

Post subject: Re: how change seagate head map with hex editor?

Posted: October 7th, 2017, 15:58

Joined: September 8th, 2009, 18:21
Posts: 15528
Location: Australia

mmzhr wrote:

i dont have 6000 $ iranian people suffer hard life salary is 200 $/month

They're so poor, they can't afford punctuation or Shift keys.

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mmzhr

Post subject: Re: how change seagate head map with hex editor?

Posted: October 7th, 2017, 17:11

Banned User

Joined: May 11th, 2017, 17:10
Posts: 236
Location: Iran

Spildit wrote:

fzabkar wrote:

mmzhr wrote:

i dont have 6000 $ iranian people suffer hard life salary is 200 $/month

They're so poor, they can't afford punctuation or Shift keys.

because of usa and israel sanctions we cannot use paypal or swift or other payment methods :cry:

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