Re: how change seagate head map with hex editor?
October 5th, 2017, 16:18
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?
Re: how change seagate head map with hex editor?
October 5th, 2017, 16:33
fzabkar wrote: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?
yes we cannot buy made in usa products how we reconize quality drives?
Re: how change seagate head map with hex editor?
October 5th, 2017, 17:20
mmzhr wrote:how calcualte checksum plese help me
See https://github.com/eurecom-s3/hdd_firmw ... master.zip
Re: how change seagate head map with hex editor?
October 5th, 2017, 17:27
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
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
Re: how change seagate head map with hex editor?
October 5th, 2017, 17:37
fzabkar wrote:mmzhr wrote:how calcualte checksum plese help me
See https://github.com/eurecom-s3/hdd_firmw ... master.zip
thanks
Re: how change seagate head map with hex editor?
October 5th, 2017, 17:38
fzabkar wrote: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
vey useful thanks
Re: how change seagate head map with hex editor?
October 5th, 2017, 18:24
mmzhr wrote:fzabkar wrote: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?
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.
Re: how change seagate head map with hex editor?
October 5th, 2017, 18:42
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?
Re: how change seagate head map with hex editor?
October 5th, 2017, 18:52
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.
Re: how change seagate head map with hex editor?
October 5th, 2017, 19:16
fzabkar wrote: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
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.
Re: how change seagate head map with hex editor?
October 5th, 2017, 20:38
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.
Re: how change seagate head map with hex editor?
October 6th, 2017, 11:52
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
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
Re: how change seagate head map with hex editor?
October 6th, 2017, 15:43
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
Re: how change seagate head map with hex editor?
October 6th, 2017, 17:56
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
hdd industry is crap
Re: how change seagate head map with hex editor?
October 7th, 2017, 14:12
i'm joking 
i like hdd and ssd
i like hdd and ssd
Re: how change seagate head map with hex editor?
October 7th, 2017, 14:36
Spildit wrote:mmzhr wrote:i'm joking
i like hdd and ssd
So ... Go buy PC-3000 !
pc3000 price is 3000 $
3000 x 4000 Tooman = 12000000 Tooman
Re: how change seagate head map with hex editor?
October 7th, 2017, 14:46
Spildit wrote:mmzhr wrote:Spildit wrote:mmzhr wrote:i'm joking
i like hdd and ssd
So ... Go buy PC-3000 !
pc3000 price is 3000 $
3000 x 4000 Tooman = 12000000 Tooman
Should be way more expensive .... Should be near $6000 USD.
Re: how change seagate head map with hex editor?
October 7th, 2017, 14:58
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
Re: how change seagate head map with hex editor?
October 7th, 2017, 15:58
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.
Re: how change seagate head map with hex editor?
October 7th, 2017, 17:11
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
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