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Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
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Why HDD has no RAM Headmap

November 3rd, 2011, 3:56

Hi,

I have a drive that starts normally, No clicking sound or errors.
ID and size info.are OK. Can read and write modules. All heads passed the
tests using PC-3000 UDMA. No major corrupted module.
Can read and change ROM Headmap.
Problem is, Any attempt to access LBA returns error.
Wanted to change Ram headmap, it returns error: No headmap found (attached image).
What would be the cause of not having RAM Headmap?

Any help or advise please.

Pninja
Attachments
No_RAM_Headmap.jpg

Re: Why HDD has no RAM Headmap

November 3rd, 2011, 4:00

If it IDs OK and you can read all modules with no problems, then I would imagine you might have a corrupt translator if you cannot access any LBAs.

Provide some more info. What kind of errors are you getting when trying to access any LBA, ERR ABR?

Re: Why HDD has no RAM Headmap

November 3rd, 2011, 5:40

This is Sadle. Sadle head map in different position to other Head Map. PC3000 utiltiy searches for head map at 0x4000000. For this series the search should be starting at (around) 0x2000000 for the map.

You can adjust manually if you know how to find it in RAM.

Or HotSwap.

Re: Why HDD has no RAM Headmap

November 3rd, 2011, 6:14

as hddguy says, UDMA does not fully support these drives. And a bunch of others.
I truly hope ace will do something about it in future releases.

Re: Why HDD has no RAM Headmap

November 4th, 2011, 2:41

Nick_CT wrote:If it IDs OK and you can read all modules with no problems, then I would imagine you might have a corrupt translator if you cannot access any LBAs.

Provide some more info. What kind of errors are you getting when trying to access any LBA, ERR ABR?


Error message is: Read error(48 bit): Device error detected (UNC).
The first thing I thought to do was translator regeneration. So, I backed up everything and did a translator regeneration.
Even I did a SA translator regeneration. Regeneration finished normally but nothing changed.
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