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 Post subject: ST2000LM007-1R8174 SBK2 Sectors Problem
PostPosted: September 19th, 2019, 10:38 
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Joined: January 18th, 2010, 23:53
Posts: 335
Location: india
ST2000LM007-1R8174 with firmware SBK2

All system files and modules are readable without problem
Some sectors reading fast some sectors very slow.

There are many many many sectors like this
Code:
24 1A 9C 92 6D 85 CE 6D 6F 93 4C D2 44 FC DC 3B     
98 25 67 CF 3F 77 EA C1 C5 B7 19 F8 16 EE F9 6F       
76 48 30 F5 C9 61 87 35 A3 DA 2A EE A0 D8 92 C3       
CC 6C CD 9B 9B 53 A0 69 79 01 E4 94 72 D5 4F 37       
AA 93 9E 81 25 4C 5D DD D7 25 B1 BA 1C C7 68 6B       
00 B6 AB B7 F7 3E 76 31 AD 48 42 A3 AE B1 05 DF
DE DA 64 5C 81 28 13 65 0B 6F 1F 49 78 A2 3E 33
B4 01 36 42 53 25 CC D8 E1 93 28 7F 0A 9C DB 66
12 24 C3 68 FD 17 E9 0C BF B6 E5 65 D4 8E F4 DA
E8 48 9C 1E 8F 01 82 60 15 DD B6 0B 66 7B 90 0E
46 6F A9 04 59 F2 BF D4 F3 01 40 30 30 75 4D 62
1C 92 7A 2D EB EC 58 08 49 24 1D 26 C2 67 66 D6
FA B6 37 D3 B4 DE 75 7C 27 4B 2E CC 6F 50 03 0A
50 DD C0 F9 46 CB 2E D0 FD 6F FB F2 39 42 3C 7E
2E 00 92 EF 10 C5 CB 07 5B 92 B4 98 CB 3C D9 AD
84 24 AF 95 A2 B7 E4 7B 31 B9 41 81 95 2E F2 01
62 4B 78 BA 4C A0 81 AF 8F DD 12 B7 27 1B AF 75
38 6E 35 A0 1E 92 BA 03 65 00 2C 5D F1 15 48 A9
96 92 C6 56 A8 8C 57 77 C3 24 F9 43 83 07 65 1D
6C B9 93 7C 7A 79 73 AB 99 4B 8A 69 2D F0 1E 71
CA DD AC 62 04 6B 2C 1F 77 6E 47 1E FF E2 3B A5
A0 00 7E 0B D6 65 C9 72 CD 92 10 04 89 DC D4 18
7E 27 0B 31 60 56 E2 A6 AB B9 2D 2A 5B C9 F1 4C
D4 4B C4 27 32 40 9F 1A 01 DC FE D0 E4 BB AA A0
B2 6E 91 CD DF 32 B8 4E DF 00 88 C6 B6 B5 47 14
08 95 A2 F3 69 2F 55 A2 B5 27 45 EF 40 A6 60 48
E6 B9 7F 98 3B 19 0E 16 13 4A 16 95 12 90 1D BC
BC DC 08 8E C5 0B 2B 4A E9 6E 23 BB BC 82 36 10
1A 03 DA B4 97 05 C4 B9 47 95 FC A1 4E 7F D2 47
F0 27 97 5A 21 F6 E1 ED 1D B8 89 57 18 69 8F BB
4E 4A A0 40 F3 E0 9A 41 FB DC 5A 7C AA 5B A8 EF
24 71 7D 69 9D D2 B7 B5 51 03 14 62 74 54 45 43


attached one sector copy here
Attachment:
Sector.txt [512 Bytes]
Downloaded 525 times


Translator is not regenerated, HDD is trying when copying
Code:
Starting LBA of RW Request=000509AA90  Length=FFFFFFFF
ProcessRWError -Read-   at LBA 000509AA9F  Sense Code=43110081


What is this sector? No MCMT error


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 Post subject: Re: ST2000LM007-1R8174 SBK2 Sectors Problem
PostPosted: September 20th, 2019, 12:27 
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Joined: February 2nd, 2019, 1:21
Posts: 192
Location: Sri Lanka
Hi.
I think one head has this problem. Although Can you check whether all heads have this problem.


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 Post subject: Re: ST2000LM007-1R8174 SBK2 Sectors Problem
PostPosted: September 22nd, 2019, 22:40 
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Joined: September 8th, 2009, 18:21
Posts: 15528
Location: Australia
Would it be OK to execute the following commands at Level T?

Code:
F"READ_SPARING_ENABLED",0,22
F"WRITE_SPARING_ENABLED",0,22
F"OFFLINE_SPARING_ENABLED",0,22
F"DAR_ENABLED",0,22
F"DISABLE_IDLE_ACTIVITY",1,22
F"BGMS_DISABLE_DATA_REFRESH",1,22
F"ABORT_PREFETCH",1,22
F"READ_LOOKAHEAD_DISABLED_ON_POWER_UP",1,22
F"READ_CACHING_DISABLED_ON_POWER_UP",1,22

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 Post subject: Re: ST2000LM007-1R8174 SBK2 Sectors Problem
PostPosted: November 23rd, 2019, 9:41 
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Joined: July 27th, 2019, 17:40
Posts: 113
Location: Vienna
gps31 wrote:
ST2000LM007-1R8174 with firmware SBK2

All system files and modules are readable without problem
Some sectors reading fast some sectors very slow.

There are many many many sectors like this
Code:
24 1A 9C 92 6D 85 CE 6D 6F 93 4C D2 44 FC DC 3B     
...
24 71 7D 69 9D D2 B7 B5 51 03 14 62 74 54 45 43



I have with a disk exact the same Problem. Do you found a solution?

PS.: I saw at least Head 1 and Head 2 read this pattern sometimes. I didn't see if on Head 0 and Head 3 yet but I will keep an eye on it.

PPS.: Head 1 and Head 2 also read some other data so that pattern just occours just in some areas of the disk...


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 Post subject: Re: ST2000LM007-1R8174 SBK2 Sectors Problem
PostPosted: November 23rd, 2019, 10:28 
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Joined: October 10th, 2019, 14:31
Posts: 13
Location: London
These rosewoods known for media degradation hence why its slow in certain areas.


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 Post subject: Re: ST2000LM007-1R8174 SBK2 Sectors Problem
PostPosted: November 23rd, 2019, 14:58 
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Joined: July 27th, 2019, 17:40
Posts: 113
Location: Vienna
cpm1993 wrote:
These rosewoods known for media degradation hence why its slow in certain areas.


Ok but why this pattern and always the same one - sounds not so logic to me.

PS.: I saw now Head 0 also read in some sectors that pattern.


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 Post subject: Re: ST2000LM007-1R8174 SBK2 Sectors Problem
PostPosted: November 23rd, 2019, 17:58 
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Joined: September 8th, 2009, 18:21
Posts: 15528
Location: Australia
Could this be the default fill pattern when the drive is shipped? Do these sectors belong to any files, or are they free clusters? Do they occur in groups of 8 (= 1 physical sector or one 4KB cluster)?

Some of WD's external SMR drives support TRIM. Could this be a TRIM issue??? Were these external drives?

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 Post subject: Re: ST2000LM007-1R8174 SBK2 Sectors Problem
PostPosted: November 24th, 2019, 4:39 
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Joined: July 27th, 2019, 17:40
Posts: 113
Location: Vienna
fzabkar wrote:
Could this be the default fill pattern when the drive is shipped?

... Theoretically but in the end i have sectors full with 0x00 so i guess that is not the case or some Programm produce this Kind of patttern.

fzabkar wrote:
Do these sectors belong to any files, or are they free clusters? Do they occur in groups of 8 (= 1 physical sector or one 4KB cluster)?

... They seem to group in clusters of 8 - anyway that drive is a 4K sector drive (EF). I wrote a Python-Script to test that and it returns always a multiple of 8 except 2 times but that can by caused by my script just checking the first 6 hex-values of each 512B chunk.

I will let the imaging finnish and then I will have a look at the result - is there a function in UFS-Explorer or r-Studio which tell me if a specific sector belongs to a file or not? Or does MRT allow to check that?

fzabkar wrote:
Some of WD's external SMR drives support TRIM. Could this be a TRIM issue??? Were these external drives?


... I don't think so because that is a Seagate drive.


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 Post subject: Re: ST2000LM007-1R8174 SBK2 Sectors Problem
PostPosted: November 24th, 2019, 5:05 
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Joined: September 8th, 2009, 18:21
Posts: 15528
Location: Australia
maddin wrote:
- is there a function in UFS-Explorer or r-Studio which tell me if a specific sector belongs to a file or not? Or does MRT allow to check that?

I know DMDE can do it.

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 Post subject: Re: ST2000LM007-1R8174 SBK2 Sectors Problem
PostPosted: November 24th, 2019, 18:59 
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Joined: October 3rd, 2005, 0:40
Posts: 4334
Location: Hungary
winhex as well...

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 Post subject: Re: ST2000LM007-1R8174 SBK2 Sectors Problem
PostPosted: November 26th, 2019, 10:12 
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Joined: October 21st, 2007, 8:48
Posts: 1631
https://forum.hddguru.com/viewtopic.php?f=1&t=38650

Some one already messed with MC and/or trans.


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 Post subject: Re: ST2000LM007-1R8174 SBK2 Sectors Problem
PostPosted: November 26th, 2019, 10:22 
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Joined: July 27th, 2019, 17:40
Posts: 113
Location: Vienna
unknown wrote:
https://forum.hddguru.com/viewtopic.php?f=1&t=38650
Some one already messed with MC and/or trans.

I have 99,82% imaged (hope today in the night i will have all done) and till now ca. 0,1% of the drive contain that Sector. After reaching 100% i will try to check which files are affected.


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 Post subject: Re: ST2000LM007-1R8174 SBK2 Sectors Problem
PostPosted: November 27th, 2019, 19:14 
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Joined: July 27th, 2019, 17:40
Posts: 113
Location: Vienna
fzabkar wrote:
Do these sectors belong to any files, or are they free clusters?

... Now I checked 4 of that Secors (searched from Sector 3.8, 3.7, 3.6 and 3.5 billion upwards) which have that pattern. WinHex tell me that they belong to 4 different files - 3 of them with the extention .mix and one .wmv-file!

But it was very strange that all sectors with that pattern read very slow (4 KB/s) and i have a bit less then 0.1% or 1.75GB full with that pattern. So there must be something with that. All other areas where reading much faster and it's far to often on the disk to be just some random piece of data.


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 Post subject: Re: ST2000LM007-1R8174 SBK2 Sectors Problem
PostPosted: November 27th, 2019, 23:16 
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Joined: September 8th, 2009, 18:21
Posts: 15528
Location: Australia
Do those sectors (on your patient) read differently in your tool and in Windows? Is your tool doing something to change the normal outcome?

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