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 Post subject: Hubble - SED Cannot write to MOD02. I'm going crazy??
PostPosted: July 20th, 2020, 5:22 

Joined: July 20th, 2020, 5:21
Posts: 1
Location: United States
I am completely confused on this one, I think PC3000 has a bug - but after speaking with their technical support (Maxim) I am no closer to a solution.

A client came in with a single platter 2 head Hubble (WD Passport HDD).
This hard drive presented with a mechanical failure.

The heads were replaced by donor obtained from credible website.
PCB was changed to SATA and ROM was written (an actual transfer not a read and write).

Model : WDC WD5000LMVW-11CKRS0
Firmware : 01.01A01
Capacity : 500 GB (976 773 168)

MOD 02 shows this drive as SED type.

Using PC3000 I performed typical block SA (shift) and upload SA DIR and Loader to gain access to SA.
PC3000 only shows Copy 0 available (H0), Copy 1 not accessible.
Head tests confirm that H1 is not working.

Ok, so with H0 functional I should be able to get 50% of the data on the HDD read by building HM as this is a 2 platter model.
A backup of all modules are made (no errors besides 6F which can be ignored), SED is removed (Edit HDD ID), a slow fix is applied. I write MOD02 by ABA Copy 0.

I then change SA regions to both point to Copy 0 and power cycle HDD.
Last I change HM on the HDD from 0>1 to 0>0 to ensure only one SA is being addressed.

Drive becomes ready and then will ID properly in PC3000, I can also browse NTFS structure (not encrypted) on H0 - however PC3000 still reports the HDD is SED locked.
No access to SA (at all). I then repeat the process but this time I read MOD02 using Module Directory. I write "101010" in MOD02 and write to HDD via ABA Copy 0. PC3000 says the module was written OK.
Then I refresh MOD02 and see the changes I made are gone, the "101010" is not present. So, PC3000 is not writing module.

I again repeat the process, this time I use terminal. Same result.

I contacted ACE Labs who state the problem is with H0 not being able to write.

I question this as a heads test shows no write errors, and I can write using H0 to NTFS (client data area) - I tested with the same "101010" in a few sectors R/W by H0.

Am I crazy? To me, PC3000 simply is not writing the module. I could also legitimately have a drive that will not write to SA due to damaged heads, but in 13 years doing DR I've never encountered that.

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