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andyfied
 Post subject: Hitachi HDS721010CLA332 reads first ~5M sectors only
PostPosted: October 2nd, 2015, 5:06 
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Joined: October 2nd, 2015, 4:56
Posts: 4
Location: London
Hello

I had this drive (Hitachi HDS721010CLA332) with faulty read/write heads. The heads have been transplanted with an exact donor (clean air room of course). Using PC3000 had difficulties reading the drive ID but going around it I managed to get it. The drive read only the first approximately 5 million sectors only then stopped reading. While the drive is still calibrating, the heads are fine. I have checked the drive modules and all the important ones are okay.

Has anyone else had this problem before?

Thanks in advance
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mr_spokk
 Post subject: Re: Hitachi HDS721010CLA332 reads first ~5M sectors only
PostPosted: October 2nd, 2015, 16:22 
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Joined: May 21st, 2007, 16:10
Posts: 1592
Location: Gothenburg/ Sweden
Could still be weak heads, SA tracks a wider than user tracks, thats why you can read. Try to read through utility in DE.

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Green Slime
 Post subject: Re: Hitachi HDS721010CLA332 reads first ~5M sectors only
PostPosted: October 2nd, 2015, 23:14 
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Joined: September 3rd, 2015, 21:04
Posts: 32
Location: The Internet
Could be a PSHT issue (Plist). Tried reading both copies separately and see if any have errors. PC3000 will sometimes just fill in bad areas with zeros to get a working one but this could cause some areas not to line up so you can't read.
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andyfied
 Post subject: Re: Hitachi HDS721010CLA332 reads first ~5M sectors only
PostPosted: October 6th, 2015, 4:33 
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Joined: October 2nd, 2015, 4:56
Posts: 4
Location: London
Thank you for the replies, but the heads have been transplanted from a brand new drive so definitely they are fine.

With Hitachis, I am aware that the PList is very sensitive to damage, but this one is perfectly fine.

I'm still a bit stuck here... Hitachis are all awkward :roll:
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andyfied
 Post subject: Re: Hitachi HDS721010CLA332 reads first ~5M sectors only
PostPosted: October 6th, 2015, 5:05 
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Joined: October 2nd, 2015, 4:56
Posts: 4
Location: London
I think I cracked it...

First I tried to use the P-List from NV-RAM, but it said it could not find it. Then I copied the P-List from the NV-RAM to the service area and it started working!

Thanks again for your help!
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pcimage
 Post subject: Re: Hitachi HDS721010CLA332 reads first ~5M sectors only
PostPosted: October 6th, 2015, 6:08 
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Joined: November 29th, 2006, 10:08
Posts: 7864
Location: UK
Does the drive ID perfectly fine in PC3K, or do you have to "kick start" it with the PC3K Hitachi ARM utility?

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pepe
 Post subject: Re: Hitachi HDS721010CLA332 reads first ~5M sectors only
PostPosted: October 6th, 2015, 20:35 
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Joined: October 3rd, 2005, 0:40
Posts: 4753
Location: Hungary
Quote:
P-List from the NV-RAM
:roll:

i might be missing something here...

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Amarbir[CDR-Labs]
 Post subject: Re: Hitachi HDS721010CLA332 reads first ~5M sectors only
PostPosted: October 7th, 2015, 11:02 
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Joined: August 15th, 2006, 3:01
Posts: 3522
Location: CDRLabs @ Chandigarh [ India ]
pepe wrote:
Quote:
P-List from the NV-RAM
:roll:

i might be missing something here...


Respected Pepe Sir ,
Exactly i had the same question .BS The NVRAM Does Not Have Plist

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pepe
 Post subject: Re: Hitachi HDS721010CLA332 reads first ~5M sectors only
PostPosted: October 7th, 2015, 19:56 
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Joined: October 3rd, 2005, 0:40
Posts: 4753
Location: Hungary
yeah, not what i know of...

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