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Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery Efforts Page 1 of 4 [ 61 posts ] Go to page 1, 2, 3, 4 Next Previous topic Next topic AuthorMessageghandi Post subject: Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery EffortsPosted: September 15th, 2014, 14:20 Joined: August 31st, 2014, 19:23Posts: 22Location: Bay AreaAfter extensively reading this forum and posting in various threads, I try to collect in this post what I have learned about a faulty Seagate 7200.14 HDDs so far:- It has a low voltage TTL serial interface (1.8 V). A Silicon Labs CP2104 USB-UART converter works flawlessly. Alternative is a Prolific PL-2303H with a TTL level shifter (or modified accordingly).- CTRL-Z gets me to the F3 T> command prompt. I found a list of commands for the F3 prompt of a 7200.12 HDD in this forum that I attach here. One user reported that the command library has not changed on the 7200.14, and another user started diagnosing the very same harddrive using these commands, so this encouraged me to do the same. The only diagnostic commands that I used so far and that worked are (see screenshots of the terminal output attached):Level T - V1, V3, V4, V40Level 1 - N5Level 2 - U, ZLevel 7 - X, DI have not typed any other commands on the prompt yet.The HDD reports extensive V1, V3 and V4 lists, but apparently no stored SMART data (all values are 0, except one that is 3). V40 gives an empty "non-resident G-List". X gives me the preamp head resistance, I can not assess if these values are healthy or not. D gives me a temperature of 35C according to the resistance of the thermistor, neat but unuseful.The HDD is not recognized by BIOS, which I do not understand. No strange sounds / clicking / etc.. Spins up / down just fine. No error messages on F3 prompt, terminal is responsive, does not hang up. If it is a bad sector problem why can I not get past BIOS?One user in this forum ( =1&t=28447&p=203701#p203701) apparently recovered the very same HDD with the very same faulty behaviour by initializing / clearing the defect list and subsequently, cleared the SMART data:F3T>i4,1,22clear g-listF3T>/1F31>N1The subsequent discussion criticises that this was very risky. If the non-resident G-list is not empty, a partial access problem can result. However in my case the non-resident G-list is empty as command V40 confirms. Is this an appropriate way to continue to try to get the disk recognized again by BIOS?Another user in this forum reports that the command m0,5,1,10,3,,,22 has to be used on 7200.14 HDD. I understand from the command reference that this formats the hard drive, so this is not what I want .The drive has an ext4 file system and my goal is to mount it again.Thanks for your help. I hope this compilation helps others who are stuck with the same HDD series / model / situation.Attachments: Normal Start Up.png [ 48.31 KiB Viewed 35497 times ]720012_commands.txt [25.01 KiB]Downloaded 1709 timesLevel T V4.png [ 58.47 KiB Viewed 35503 times ]Level T V3.png [ 51.25 KiB Viewed 35503 times ]Level T V1.png [ 51.35 KiB Viewed 35503 times ]Level T - V40.png [ 5.58 KiB Viewed 35503 times ]Level 7 X.png [ 3.35 KiB Viewed 35503 times ]Level 1 N5.png [ 8.71 KiB Viewed 35503 times ]Top ghandi Post subject: Re: Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery EffoPosted: September 15th, 2014, 17:05 Joined: August 31st, 2014, 19:23Posts: 22Location: Bay AreaThis was a procedure for a 7200.12 found here: =1&t=28523Spildit wrote:Ok,on F3 T> issue m0,6,3,,,,,22press enter and wait for it to finish. Do not power off the drive untill it finish and drop again to F3 T>Then to help with recovery (copy files out) disable relocation by sending the followin commands one by one (press enter at the end of the 22) :F0A2,00,22F01E4,00,22F057C,043C,22Now try to clone the drive or copy the data out.FAST !!!! Because if this works the drive will die soon no matter what.I am hesitating to apply this to a 7200.14. Any comment would be appreciated. Thanks.Top fzabkar Post subject: Re: Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery EffoPosted: September 15th, 2014, 17:10 Joined: September 8th, 2009, 18:21Posts: 14570Location: AustraliaRead this first: =557_________________A backup a day keeps DR away.Top hhddrec Post subject: Re: Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery EffoPosted: September 15th, 2014, 17:43 Joined: August 13th, 2008, 13:10Posts: 815Location: Worldhi frank.link problemsTop fzabkar Post subject: Re: Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery EffoPosted: September 15th, 2014, 17:53 Joined: September 8th, 2009, 18:21Posts: 14570Location: AustraliaIt works for me.Try =557_________________A backup a day keeps DR away.Top hhddrec Post subject: Re: Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery EffoPosted: September 15th, 2014, 17:56 Joined: August 13th, 2008, 13:10Posts: 815Location: Worldnow works fine, but minutes ago notTop ghandi Post subject: Re: Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery EffoPosted: September 15th, 2014, 17:56 Joined: August 31st, 2014, 19:23Posts: 22Location: Bay Area@ fzabkar: Thanks for the link. However, I do not see InitiateMarkPendingReallocateRequest on the F3 prompt... Therefore I am not sure if disabling auto relocation helps...@ hhddrec: I had lots of trouble in the past days to access the HDD Oracle forum... My firewall terminated the request due to a trojan on the webserver, or the server was not reachable at all... Seems to work now via the URL...Top hhddrec Post subject: Re: Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery EffoPosted: September 15th, 2014, 18:03 Joined: August 13th, 2008, 13:10Posts: 815Location: Worldhi Ghandisometimes can i open link and other times notTop ghandi Post subject: Re: Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery EffoPosted: September 15th, 2014, 18:10 Joined: August 31st, 2014, 19:23Posts: 22Location: Bay AreaI had a look at the F command... Output is attached...So as I understand, in my particular case / drive, it is byte 009A that stores RWRecoveryFlags.So the appropriate command would be:F009A,C1to set disable_correction to 1.So far so good. What would be the next step? Clone the device with MHDD? Could I maybe use Clonezilla?Is there hope the device can be mounted in Linux without cloning?Attachments: Level T F.log [44.23 KiB]Downloaded 1308 timesTop ghandi Post subject: Re: Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery EffoPosted: September 15th, 2014, 18:30 Joined: August 31st, 2014, 19:23Posts: 22Location: Bay AreaFurther investigating the topic, I found fzabkars post here: =694Quote:It might be worth disabling READ_CACHING and READ_LOOKAHEAD in DIY cloning cases, and perhaps setting DISABLE_ADAPTIVE_READ_AHEAD = 1 might have benefits also. Reading through the F output to find these flags right now...Also very worth reading (presumably the same author): -d ... 00002.htmlTop ghandi Post subject: Re: Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery EffoPosted: September 15th, 2014, 19:15 Joined: August 31st, 2014, 19:23Posts: 22Location: Bay AreaOk, I think I figured it out. To summarize, I would need to type:Quote: RWErrorRecovery GroupByte:009A: RWRecoveryFlags = C0Byte:009A: Bit:0, DISABLE_CORRECTION = 0Byte:009A: Bit:1, DISABLE_TRANSFER_ON_ERROR = 0Byte:009A: Bit:2, POST_ERROR = 0Byte:009A: Bit:3, ENABLE_EARLY_RECOVERY = 0Byte:009A: Bit:4, READ_CONTINUOUS = 0Byte:009A: Bit:5, TRANSFER_BLOCK = 0Byte:009A: Bit:6, READ_SPARING_ENABLED = 1Byte:009A: Bit:7, WRITE_SPARING_ENABLED = 1 Bit:0 needs to be set to 1, so:1100 0000 = C0 changes to1100 0001 = C1Resulting command:F009A,C1Quote: CacheControl GroupByte:00E2: CacheFlags = 14Byte:00E2: Bit:0, READ_CACHING_DISABLED_ON_POWER_UP = 0Byte:00E2: Bit:1, MULTIPLICATION_FACTOR = 0Byte:00E2: Bit:2, WRITE_CACHING_ENABLED_ON_POWER_UP = 1Byte:00E2: Bit:4, DISCONTINUITY = 1Byte:00E2: Bit:5, CACHING_ANALYSIS_PERMITTED = 0Byte:00E2: Bit:6, ABORT_PREFETCH = 0Byte:00E2: Bit:7, DISABLE_ADAPTIVE_READ_AHEAD = 0 Bit:0 needs to be set to 1, Bit:2 set to 0 and Bit:7 set to 1, so:0001 0100 = 14 changes to1001 0001 = 91(As you can see, Bit:3 is not set. Using a '0' results in the correct hex code.)Resulting command:F00E2,91What I do not understand yet:Quote: Byte:00EC: SpecialCacheFlags = 90Byte:00EC: Bit:5, READ_LOOKAHEAD_DISABLED_ON_POWER_UP = 0Byte:00EC: Bit:7, FORCE_SEQUENTIAL_WRITE = 1 This means, SpecialCacheFlags should be 1000 0000 = 80, not 90.90 translates to 1001 0000As Bit:4 has no use, it probably does not matter...Considering that all bits except Bit:7 and Bit:5 are 0, I get the following solution:Bit:5 needs to be set to 1, so:1000 0000 = 80 changes to1010 0000 = A0Resulting command:F00EC,A0Comments are greatly appreciated!Top labtech Post subject: Re: Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery EffoPosted: September 16th, 2014, 6:15 Joined: August 18th, 2010, 17:35Posts: 3611Location: Massachusetts, USAMHDD does not have cloning function, at least not in the sense you need it. Since it seems DIY is the route you intend, then clonezilla is not such a good option as the drive will more than likely struggle to some extent with bad sectors. Recommend practicing ddrescue on a non-critical drive. Also, can look into something like media tools. Your best chance of recovery is a hardware imager which is the type of equipment specialists use._________________Hard Disk Drive, SSD, USB Drive and RAID Data Recovery Specialist in MassachusettsTop fzabkar Post subject: Re: Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery EffoPosted: September 16th, 2014, 7:00 Joined: September 8th, 2009, 18:21Posts: 14570Location: AustraliaI would try "F00EC,B0", ie leave bit 4 as is, but I don't have any way to test this.That said, I'm not a data recovery professional, but I expect that your solution is in that other thread:viewtopic.php?f=1&t=28447&p=203701#p203701BTW, ddrescue is generally regarded as the best DIY cloning tool.As for the Oracle, see viewtopic.php?t=29510&p=203640#p203640If you need professional services, I understand that forum member bcometa offers a fixed price recovery, using a hardware imager, for US$300._________________A backup a day keeps DR away.Top ghandi Post subject: Re: Seagate 2 GB ST2000DM001 Barracuda 7200.14 Recovery EffoPosted: September 16th, 2014, 12:19 Joined: August 31st, 2014, 19:23Posts: 22Location: Bay AreaThanks for the hint. I have an Ubuntu machine and will have a look at ddrescue then.I somehow understand the disk times out / does not get ready when BIOS attempts to detect it - still there are two possible explanations / solutions:a) Because it encounters unreadable sectors during start up and times out - so applying the Fxxxx,yy commands allows to bypass the time out in BIOS.b) Because it takes the drive simply too long to go through the quite long V list of marked sectors during its initialization, so emptying the V lists using the i command and simultaneously applying the F commands (so the V list is not filling up again) seems to be the way.Summarizing b), the correct command order would beCode:/Ti4,1,22F009A,C1F00E2,91F00EC,B0/1N1No m command e.g. for rebuilding translator etc....! Then power down, power up; hope that the drive is recognized by BIOS, mirror the drive with ddrescue, then look at the mirror for data recovery. I am hesitating to mount the original drive directly in Linux for data access (might not even work if one of the heads is bad - can somebody assess the resistance values in the screenshot above?).Non-resident G-list is empty as confirmed by V40 command so the i4,1,22 command might be okay as in the other example here in the forum, but clearing SMART data wit N1 somehow does not appear meaningful to me as it is already empty...BTW Dell sent us the same drive as a replacement. Given that the machine it was in runs its OS from a SSD and only accesses data on the HDD quite rarely ( 2ff7e9595c
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