Hitachi 500Gb - HDP725050GLA360 - Dead PCB?

[ROb]

fzabkar
Here is nvram

Attachments

nvram.rar

(1.18 KiB) Downloaded 319 times

[ROb]

nvram editing

Attachments

Capture.JPG (46.33 KiB) Viewed 8521 times

[fzabkar]

Maybe I've introduced a red herring. Perhaps your model doesn't have a boot flag.

In any case I have no idea how a drive behaves when you edit the boot flag, but FWIW here is an article about a much earlier model:

http://www.disk-imager.com/data-recovery-blog/?p=1363

Later models appear to have FW boot flags of 0x81 and 0x80.

Maybe I'm barking up the wrong tree, but would it be worth retrieving the resources from a donor drive and comparing its PCB NVRAM and NVRC SA copy?

[pcimage]

nvram editing

One head?

Doesn't look right

[fzabkar]

nvram editing

One head?

Doesn't look right

Yes, the HDT721016SLA380 has 1 head (section 4.1). The 250GB model has 2 heads.

Deskstar 7K1000.B and E7K1000 and CinemaStar 7K1000.B Specification:
http://web.archive.org/web/201212271121 ... ev3.01.pdf

[ROb]

Maybe I'm barking up the wrong tree, but would it be worth retrieving the resources from a donor drive and comparing its PCB NVRAM and NVRC SA copy?

I compare both the copies of Donor drive. i.e. the PCB NVRAM and NVRC SA copy. They have some difference in them, i am not an expert of this subject. Some more hint might help me resolve this issue.

Thanks

[pcimage]

nvram editing

One head?

Doesn't look right

Yes, the HDT721016SLA380 has 1 head (section 4.1). The 250GB model has 2 heads.

Deskstar 7K1000.B and E7K1000 and CinemaStar 7K1000.B Specification:
http://web.archive.org/web/201212271121 ... ev3.01.pdf

Yep, that's right.

I got confuddled by the post title "Re: Hitachi 500Gb - HDP725050GLA360 - Dead PCB"

[Amarbir[CDR-Labs]]

Hello,
Could You Please Click Pictures of Your Native And donor PCB and Top Of Your Hdd Please for some of Us .As i suggested earlier a new thread would be wise you can still do it .We will do our best to assist