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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My next victim: Practically all UNCRs

August 16th, 2014, 16:13

So after my first successful attempt at fixing an HDD(viewtopic.php?f=1&t=29187), i am back for for another round. First i would like to mention that this is entirely for my learning experience. The data on these drives are in no way important. Having said that, any suggestion i get is viable, whether it be "fling it against a wall" or "flush it down the toilet".

Okay so running a scan in MHDD practically gets me all UNCRs with a few AMNFs. I don't know the relationship between LBAs and Sectors so ima just say MHDD reports the drive has LBA: 625,142,448. LBAs 0 to about 250,000 read fine(<3ms), after that it's downhill with UNCs and AMNFs. I know this drive is quite possibly undergoing mechanical failure but my intentions are to learn the steps in properly diagnosing mechanical failures and what exactly is failing here. To answer the foremost and most important question: No i get no clicking sounds.

Drive Model: WD3200BEVT-22A23T0

Re: My next victim: Practically all UNCRs

August 16th, 2014, 17:49

Seem that your drives are going all to fail, you would considering to change your computer power supply or the motherboard (or both).
Try to do a surface scan in MHDD by using another computer which you know for sure that it's not faulty.

Re: My next victim: Practically all UNCRs

August 17th, 2014, 5:04

I opened this drive and had fun with it's inners. I dumped the firmware modules before i destroyed it and will attach for the firmware junkies.
Attachments
WDCWD3200BEVT-22A23T0.zip
Family: JAMAICA
SA Cyl: 256
SA SPT: 885
External ROM: YES
ROM Size: 256
ROM Version: 0016000T
FW Version: 0016000T
Summary FW Ver: 1.01A01-0016000T
Controller FW Rev: 16.0TT
Servo FW Rev: 07.17
Overlay FW Rev: 16.0TT
DCM Head: K (4B)
DCM Media: L (4C)
Head Count: 2
Head Map: 0,1
(6.68 MiB) Downloaded 377 times
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