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 Post subject: Seagate ROM Issue
PostPosted: March 30th, 2024, 5:42 
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Joined: November 3rd, 2022, 5:51
Posts: 10
Hi Guru
Seagate 2TB when read and Write Rom with PC3000 SAP Error
Ask for help and guidance.
This hard drive has already been tampered with and I don't have access to the original ROM.
The map of the heads in this hard drive is manipulated.
I have attached the original ROM.
Thanks and any help would be appreciated
Model:ST2000DM001
PN:9YN164-300
FW:CC46
SN:Z2F


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ROM.rar [1.03 MiB]
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 Post subject: Re: Seagate ROM Issue
PostPosted: March 30th, 2024, 8:41 
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Joined: September 8th, 2009, 18:21
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Location: Australia
The bad SAP is at offset 0x246E8. There is a good copy at 0x646E8 in the second half of the ROM. You just need to write the good copy over the first copy.

It looks to me as if someone has deliberately fiddled with this area (head map?):

Good SAP

Code:
Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00001670                                01 02 03 04 05 05
00001680  06 07 08 09

Bad SAP

Code:
Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00001670                                01 00 01 00 01 05
00001680  06 07 08 09

BTW, the actual size of the ROM appears to be half of what you think it is, ie 512KB, not 1MB.

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 Post subject: Re: Seagate ROM Issue
PostPosted: March 30th, 2024, 8:59 
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Joined: November 3rd, 2022, 5:51
Posts: 10
What should I do?
And is there a solution?


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 Post subject: Re: Seagate ROM Issue
PostPosted: March 30th, 2024, 9:03 
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Joined: September 8th, 2009, 18:21
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ad1479 wrote:
What should I do?
And is there a solution?

fzabkar wrote:
You just need to [use a hex editor to] write the good copy [of the SAP] over the first copy [of the SAP].

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 Post subject: Re: Seagate ROM Issue
PostPosted: March 30th, 2024, 9:37 
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Joined: November 3rd, 2022, 5:51
Posts: 10
I did this in HEX EDITOR but I still get the SAP crash error
And I even made the map of the heads. But I didn't get the result


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 Post subject: Re: Seagate ROM Issue
PostPosted: March 30th, 2024, 11:47 
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Joined: November 3rd, 2022, 5:51
Posts: 10
Read And Write Error


Attachments:
4.jpg
4.jpg [ 434.97 KiB | Viewed 1315 times ]
3.jpg
3.jpg [ 114.15 KiB | Viewed 1315 times ]
2.jpg
2.jpg [ 185.54 KiB | Viewed 1315 times ]
1.jpg
1.jpg [ 181.95 KiB | Viewed 1315 times ]
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 Post subject: Re: Seagate ROM Issue
PostPosted: March 30th, 2024, 12:21 
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Joined: October 3rd, 2005, 0:40
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Location: Hungary
CRC needs to be corrected...

edit: it should be done by pc3k if you edit hd map using its dialog.

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 Post subject: Re: Seagate ROM Issue
PostPosted: March 30th, 2024, 12:41 
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Joined: November 3rd, 2022, 5:51
Posts: 10
Hi pepe
thanks for reply
Head Map Change with pc3k
Attached


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ROM_Z2F_Head Map Change.rar [251.25 KiB]
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 Post subject: Re: Seagate ROM Issue
PostPosted: March 30th, 2024, 13:58 
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Joined: September 8th, 2009, 18:21
Posts: 15522
Location: Australia
If you want to work with Seagate F3 ROMs, forget PC3K. Use F3RomExplorer instead.

https://www.hddoracle.com/download/file.php?id=8721

The SAP segment has a size of 0x5018 bytes.

What are the part markings on your ROM? You still appear to be selecting the wrong ROM size.


Attachments:
ROM_Z2F03VYL_698A6548_repaired.7z [247.38 KiB]
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 Post subject: Re: Seagate ROM Issue
PostPosted: March 30th, 2024, 14:14 
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Joined: November 3rd, 2022, 5:51
Posts: 10
Thanks Fzabkar for reply
But the logic head map has changed and decreased. The photo is attached


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 Post subject: Re: Seagate ROM Issue
PostPosted: March 30th, 2024, 14:20 
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Joined: November 3rd, 2022, 5:51
Posts: 10
Yes you are right
The size of the RAM on the board is 512 and I had not paid attention to this issue


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 Post subject: Re: Seagate ROM Issue
PostPosted: March 30th, 2024, 14:23 
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Joined: November 3rd, 2022, 5:51
Posts: 10
Thanks Fzabkar for reply
But the map of logical heads is reduced
I have attached the photo


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 Post subject: Re: Seagate ROM Issue
PostPosted: March 30th, 2024, 14:47 
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Joined: September 8th, 2009, 18:21
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Location: Australia
I just restored your original SAP. I didn't meddle with the head map. That's up to you.

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 Post subject: Re: Seagate ROM Issue
PostPosted: March 30th, 2024, 14:57 
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Joined: November 3rd, 2022, 5:51
Posts: 10
Thank you very much for the SAP correction
And I appreciate your kindness
May I ask you to check the heads map as well?


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 Post subject: Re: Seagate ROM Issue
PostPosted: March 30th, 2024, 15:22 
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Joined: September 8th, 2009, 18:21
Posts: 15522
Location: Australia
ad1479 wrote:
May I ask you to check the heads map as well?

I'm not a DR pro. That's a question for @pepe.

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