Hi everybody,
Through Seagate user manual, in chapter 6.2 The "Tools" --> "Utillity extensions" menu, i saw term "SDLD, block checksum". Who can tell me what SDLD algorithm is, or any document about SDLD algorithm ?

Thank you very much.

That is something that you will need to reverse yourself :@)

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All went well until I plugged the drive in.

Hi Guru,
Thanks for your reply.
With checksum formula in WD HDD, or Seagate (byte sum, word sum) i can understand but with SDLD, this is a problem. Any advice for me ?

The algorithm is known and was published on a russian forum

http://www.lmgtfy.com/?q=%D1%81%D0%B4%D0%BB%D0%B4+xor

Oh, Thanks a lot for your sharing.
I will try to understand Russian.

Thanks again.

Hi Vorian,
Thanks a lot of for your sharing, i will try to understand Russian forum.

That spoils the fun of learning :@(

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All went well until I plugged the drive in.

Hi guru,
I have spend 1 week for SDLD algorithm to analyze, and the result is still zero. Have a lot of checksum algorithm but with SDLD, this is the first i hear about it. (

http://forum.ru-board.com/topic.cgi?for ... &start=400

Looks good also talks about handshake ;@) which is required

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All went well until I plugged the drive in.

Thanks Vorian and guru again, i understood it. If you didn't tell about it for me, maybe i drop out.

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Best Regards,
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Email: hddselftest@gmail.com