A Hitachi HDD shows UNC to full drive after few sectors.

Do you have solution regarding this issue?

HDP72502GLA380

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Hi,

Have you checked if PList is fine?

The drive had bad sectors initially.

Plist read was fine, Glist read was fine, to make things stable in imaging I transferred Glist records to Plist, after this, the problem raised. Still the Plist is fine.

Theoretically, this HDD has backup P-list module in SA-C, I am thinking for writing back the SA-C module to SA-A. Then the previous P-list records will be back, this might make the drive to last working state!

Any thought? Or is my idea practically applicable or does it have downgrade?

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I had that problem once and was related to Plist, that had some sectors outside of it's lba. Check that also.

RSVD. PSHT(Plist), RDMT(Glist) is corrupt on SA-C, but in SA-A - these 3 modules are fine.
So, I can't write SA-C to SA-A.

2ndly, The LBA is right.

In this situation, how to fix the P-list in SA-C? as well as G-list?

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Update: I can see there are 3 records outside it's LBA under P-LIST.

Original LBA is - 488397168

3 Records that are outside -
1. 488397228
2. 488397229
3. 488397522

Total records into Plist - 547

In this situation, how to release these specific 3 records?

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Now you starting messing with it

All were thought, did nothing still yet. I was just updating the analysis.

Well, when the LBA is outside, is there any way to make the case fixable?

There is another thought in my sense - Release the P-list then adding back manually the P-list again.
But will it be applicable? or will be problematic for the case?

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Bad idea on Hitachi, the problem was probably elsewhere.


In a far far away theory. Did you check the content of SA-C vs SA-A ?



See above

yes, I checked the content of SA-C vs SA-A, in SA-C the Plist, Glist was error. But in SA-A, both are fine.

Last things were in account to Clearing the P-List and adding back all defects back except 3 wrong LBA value. But it didn't work, after clearing plist, message appears SUCCESSFUL but the plist records remain.
Only last idea based on theory I see is VIRTUAL TRANSLATOR what is so far practically not possible for me now.

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Quote :

"yes, I checked the content of SA-C vs SA-A, in SA-C the Plist, Glist was error. But in SA-A, both are fine."

SA-C is for another purpose, in fact.

Honestly, to me the problem was elsewhere right from the start, but I feel it is a lost battle with SD tool.
P.S. on Hitachi / IBM it is always a bad idea to fiddle with lists on live data, unless you have COMPLETE ACCESS to SA with a tool THAT WORK and you are able to reverse ANY change .

Yea, SA-C is for another purpose.

The drive could be imaged without transferring the G-list to Plist. Only because of this operation the problem raised, I agree. If there would be a P-list editing feature on that SD tool or at least what I calculated would work might make the case fixed. I don't know if PC3K offers such features for editing P-list on Hitachi or creating a virtual translator. On the other hand, DFL is offering such a feature for Sector Interruption fix on Hitachi, according to my understanding, DFL is doing the same job behind the scene.

After all, I don't have other option except SD tool so far. Considering for DFL tool in near future.

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SHAHI
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