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Need help calculating WD module checksum

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PAKComputers

Post subject: Need help calculating WD module checksum

Posted: May 9th, 2014, 16:11

Joined: January 17th, 2014, 15:02
Posts: 25
Location: Cuyahoga Falls, Ohio

I have a WD3200BEKT with an inaccessable loader.
I found the module by reading track -135.
According to module 02, the size is 511, so I extracted 261,632 bytes to 11.rpm starting with the ROYL header.

The problem is when I send the ldr to the drive, I get a OVL CHECKSUM error

How do you calculate the checksum ?
Does anyone have a program (or source code) to calc the checksum ?

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fzabkar

Post subject: Re: Need help calculating WD module checksum

Posted: May 9th, 2014, 16:34

Joined: September 8th, 2009, 18:21
Posts: 14945
Location: Australia

I previously uploaded a free checksum calculator that was written by Pete Disdale:
download/file.php?id=4921

The checksum is a 32-bit little-endian sum over the module's contents. It should be 0.

_________________
A backup a day keeps DR away.

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