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 Post subject: HD problem on WD7500AAKS (750GB WD) : iregular power random
PostPosted: June 22nd, 2011, 15:07 
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Joined: June 22nd, 2011, 15:05
Posts: 3
Location: somewhere not over the rainbow
hi !

while i was working (office activity so not very HD work/copy) on my computer, i have a strange freeze problem : my browser (where i worked) was frozen . It was the hard drive where the mozilla cache was.
After a short moment i quickly understood my whole hard drive will go failure !
and i heard strange noise : run and switch off motor/head/power.

now my HD does not run at windows boot... (i'm crying my heart of 750GB of personal data !!)

i got back the HD off the case and now i'm trying it with USB access using usb-sata cable connector.

When i switch on the HD, it's running a very short time (5s), but the OS (win7 x64) did not have enought time to rightly discover it (and all its partition) because the drive always switchs off on first USB drive detection !

then i unplug and replug the HD and the drive can very hardly (random i guess) been recognize by windows. Only one time i success to see again my partition/files list but not enought time to copy the files.

what should i do know ?

do you think if i access it with linux live CD, the HD may work better (enough time for a backup) ? Maybe linux will check/boot/discover the USB drive more quickly than windows does ? Maybe the HD mecanical system is less solicited under linux ?

thanks for help (sorry for my expression, i'm not born english)

my hard drive is :
brand : western digital
model : WD7500AAKS-00RBA0
DATE : 04 jul 2007 (so almost 4 years)
DCM : HBRNNA2ABB
SN : WCAPT0126312


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 Post subject: Re: HD problem on WD7500AAKS (750GB WD) : iregular power random
PostPosted: June 22nd, 2011, 15:38 
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Joined: August 18th, 2010, 17:35
Posts: 3640
Location: Massachusetts, USA
seems like bad sectors and/or dying heads

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 Post subject: Re: HD problem on WD7500AAKS (750GB WD) : iregular power random
PostPosted: June 22nd, 2011, 15:45 
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Joined: June 22nd, 2011, 15:05
Posts: 3
Location: somewhere not over the rainbow
once the drive is switch on, it can spin (at computer boot it stay on, and have smart Ok in bios).

first disk access under windows (while logo win7 animation) make it power down.

once i unplug it, and replugit (to reload the windows usb detection) , then the disk can stay power on.

some little second i can click on partition letter and see the first root.

once i dbl clik into a folder, the disk goes in power donw ! (i tried 2 times) .


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 Post subject: Re: HD problem on WD7500AAKS (750GB WD) : iregular power random
PostPosted: June 23rd, 2011, 2:34 
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Joined: November 29th, 2006, 10:08
Posts: 7843
Location: UK
This drive needs pro attention, the more you try and DIY it the more expensive it will get and lessen the chances of recovery.

"Somewhere not over the rainbow" is not a country/city I'm familiar with so can't point you in the right direction. :?

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 Post subject: Re: HD problem on WD7500AAKS (750GB WD) : iregular power random
PostPosted: June 23rd, 2011, 2:49 
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Joined: June 22nd, 2011, 15:05
Posts: 3
Location: somewhere not over the rainbow
well,

guess what...i'm back with pretty good news :

1 - Four hours after my last post, i burnt a ISO live CD of linux (kubuntu 11.04 x86, KDE because very look like Win7 for no-gnome user !)
2 - i boot on the live CD (my fail drive is out and switch of, and no link USB yet)
3 - once linux is full CD-loaded into memory, i run the explorer (its pretty name is Dolphin, no more Konqueror like at my work on my old machine)
4 - i plug the HD on power (i remind you my HD is now a external usb because bring it out quickly of the case since the first failure)
5 - i wait the power look stable (like about 10s to be sure it will not suddenly auto-random switch off itself)
6 - then i connect the usb link to my case
7 - then...miracle...god is an opensource savior !
8 - linux autodetech my usb harddrive quickly (i'm pretty stomached because it did that at least x4 faster than Win7 usb detection and most wonderful of that : no more need to do the dish-mount thing in console with hand, last KDE release does that auto and quickly ! God must really be an opensource melting of strange things)
9 - now i can see the file structure, and begin to browse it, open subfolder (here i got a big fear because once i click on one file, linux try to read it instantly to make a preview thing, or catch details on the install. Why can't it just read the fXXXking mdr & fat to just display the file listing...well more fear that bad thing )
10 - then tadaaaaa, i can copy and paste elsewhere my folder (even ot the need to install ntfs writer, it runs/can wxrite on ntfs at start ! damn, my old-work must be very old....)
11 - i was able to copy/paste my precious data for about 20 minutes then.......the power supply was off again before my entire backup !!! damn it Opensource linux god is not a full savior, just an enticing people!)
12 - i decided to unplug and replug, redo the whole procedure, step by step .... but it won't run anymore ...not bad at all because i successed to backup around 70% of my very important work (most part of the rest was on a old bakcup of 1 month dated)

It could be the end of my story but....no !

13 - i came back under windows
14 - i redo the exact same procedure...
15 - and it ran again !!!!! Yeah !!!! god can be an opensoure thing at all ! it was just a question of time, hazard (principle of heretism, eclipse act...etc..)
16 - quickly i gone on my backup.............then about 5-10min later the hard drive switched off random again.... (i guess satan does exist in all case )
17 - i went to bed and told myself it must be tired like me !
It was really like something was heat, become hot (but no strange small at all, my nose is very good in that).
18 - now, during the morning (7 hours after last success windows boot), the hard drive rans again 20 minutes (same procedure), and i finished my backup.
and the drive shut down again, power supply is sleeping again....

Now, i'm waiting the opening of the IT-shop to quickly buy a new disk because i'm stressing of haveing my whole life on only on support.
Oh, by the way, the hard drive was not placed "à plat" (in french), guess i can translate by "not lay down", but it was stood up and the front connector panel was on the high (to the up).
Last time i checked the random power shutdown, i had notice it had better chances to run when the disk was in stand up position...strange behavior...strange failure for a not-mobile hard drive maybe it depends on the number of heads/platters (four in my case i think)

Thanks for all you message and help, and advice.
Even if God is not opensource, it still have improve linux since my last installation at my work ! Glory to Kubuntu (i know people hate KDE, not me..., Joke, kidding..)


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 Post subject: Re: HD problem on WD7500AAKS (750GB WD) : iregular power random
PostPosted: June 23rd, 2011, 8:20 
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Joined: July 12th, 2010, 4:38
Posts: 1420
Location: Portugal
Out of topic: I use Kubuntu on all my personal PC's and it's excelent :mrgreen:

Glad you solved the case.

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 Post subject: Re: HD problem on WD7500AAKS (750GB WD) : iregular power random
PostPosted: June 23rd, 2011, 11:09 
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Joined: October 28th, 2009, 14:35
Posts: 775
Location: Toronto
Congrats on the recovery. The description of the initial problem looks like the PCB is at fault , not bads and heads.


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 Post subject: Re: HD problem on WD7500AAKS (750GB WD) : iregular power random
PostPosted: June 23rd, 2011, 11:16 
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Joined: August 18th, 2010, 17:35
Posts: 3640
Location: Massachusetts, USA
That is some strange drive. Still not clear in my opinion as to what the real problem is. It would be nice if the OP would run MHDD on the drive on a good known machine and see what it does then...

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 Post subject: Re: HD problem on WD7500AAKS (750GB WD) : iregular power random
PostPosted: June 26th, 2011, 7:22 
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Joined: September 8th, 2009, 18:21
Posts: 15538
Location: Australia
Alexii wrote:
Congrats on the recovery. The description of the initial problem looks like the PCB is at fault , not bads and heads.

I thought that the drive may have been a Tornado but I wasn't sure. Is that what it is?

I notice that there are two similar MCUs -- the Marvell 88i6745-TFJ1 with internal flash, and the Marvell 88i6545-TFJ1 with external flash. Is it the MCU that is the problem with these boards?

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