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 Post subject: WD Red BIOS Swap
PostPosted: January 13th, 2020, 21:48 
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Joined: January 13th, 2020, 21:41
Posts: 1
Location: Deutschland
Hi all,

I have a problem with my WD Red White Labelled (WD80EMAZ).

I plugged in the Hard Disk to a Running PC and then the Disk did not start up anymore.
It is a White Labelled so there is something with the 3,3v pin.

I tried to desolder some Stuff on the Sata Power Connector but it did not work out. So I ordered a second HDD. It is the same HDD.
I want to swap the BIOS now that the Index is not gone.

The problem is that I and some other people do not know for sure what the BIOS is on this Model.

You can see on the Screenshot the PCB.

I hope someone can say what the BIOS is that I can try out to swap it.

If you have some other Idea how spin up the disk again i open.

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Best,
Daniel


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 Post subject: Re: WD Red BIOS Swap
PostPosted: January 13th, 2020, 22:51 
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Joined: September 8th, 2009, 18:21
Posts: 12171
Location: Australia
The "BIOS" chip is the one marked "25LH16".

GD25LH16WIG, GigaDevice, 16Mbit, 1.8V, SPI flash memory, QFN-8:
http://www.gigadevice.com/datasheet/gd25lh16c/

Datasheet database for HDDs and SSDs:
http://www.users.on.net/~fzabkar/Datasheets/DATAURLS.HTM

Does the second HDD spin up from the same SATA power cable? Have you measured the voltages at the SATA power cable?

SATA power pin #3 is a Power Disable pin. If it is wired to 3.3V, then the drive will remain powered off.

BTW, your drive is a rebadged HGST helium model.

_________________
A backup a day keeps DR away.


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 Post subject: Re: WD Red BIOS Swap
PostPosted: January 15th, 2020, 14:49 
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Joined: January 29th, 2009, 11:23
Posts: 230
Location: SXSW
This post will help you, is the 3.3V Pin Issue

https://www.youtube.com/watch?v=9W3-uOl4ruc


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