Samsung Strange Terninal Errors

Jared

Administrator
Staff member
I've got a Samsung 2.5" ST1000LM024 HN-M101MBB drive that comes ready (most of the time) and correctly ID's shows capacity, can even read modules. However whenever I try to access a sector it goes into an endless loop with the following readout with the AP Cnt steadily rising:

S_0SR:0
AP:1 C:174717-> 6244 H:3->3 AP Cnt: 19
UF 3 1stGrayErr Hd:3
SK C:174999 H:0
SR:1
AP:1 C:174998-> 6244 H:3->3 AP Cnt: 19
UF 3 1stGrayErr Hd:3
SK C:175522 H:0
SR:2
AP:1 C:175521-> 6244 H:3->3 AP Cnt: 19
UF 3 1stGrayErr Hd:3
SK C:175974 H:0
SR:3
AP:1 C:175973-> 6244 H:3->3 AP Cnt: 19
UD..OK : 99
PK_1 C:175973 H:3
GT:423
SC(L):4140/80
BE.N:31
LDUD..OK : 80
PK_3 C: 0 H:3
GT:423
SC(L):4143/98
BE.N:28
LD..OK
SK C: 7466 H:0
AP:1 C: 7466-> 6244 H:3->3 AP Cnt: 20
UF 3 1stGrayErr Hd:3
SK C:176057 H:0

S_0SR:0
AP:1 C:176056-> 6245 H:3->3 AP Cnt: 20
UF 3 1stGrayErr Hd:3
SK C:175998 H:0
SR:1
AP:1 C:175998-> 6245 H:3->3 AP Cnt: 20
UF 3 1stGrayErr Hd:3
SK C:176104 H:0
SR:2
AP:1 C:176104-> 6245 H:3->3 AP Cnt: 20
UF 3 1stGrayErr Hd:3
SK C:176170 H:0
SR:3
AP:1 C:176170-> 6245 H:3->3 AP Cnt: 20
UD..OK : 98
PK_1 C:176170 H:3
GT:424
SC(L):4140/35
BE.N:28
LDUD..OK : 35
PK_3 C: 0 H:3
GT:423
SC(L):4142/97
BE.N:30
LD..OK
SK C: 7974 H:0
AP:1 C: 7975-> 6245 H:3->3 AP Cnt: 21
UF 3 1stGrayErr Hd:3
SK C:175851 H:0

S_0SR:0
AP:1 C:175851-> 6245 H:3->3 AP Cnt: 21
UF 3 1stGrayErr Hd:3
SK C:175739 H:0
SR:1
AP:1 C:175739-> 6245 H:3->3 AP Cnt: 21
UF 3 1stGrayErr Hd:3
SK C:176064 H:0
SR:2
AP:1 C:176064-> 6245 H:3->3 AP Cnt: 21
UF 3 1stGrayErr Hd:3
SK C:176351 H:0
SR:3
AP:1 C:176351-> 6245 H:3->3 AP Cnt: 21
UD..OK : 97
PK_1 C:176350 H:3
GT:423
SC(L):4151/75
BE.N:29
LDUD..OK : 75
PK_3 C: 0 H:3


Any thoughts on how I can get it to stop doing this? It seems similar to the pending sectors bug I've seen in some Seagate's but I've never seen this with a Samsung before.
 

Jared

Administrator
Staff member
Update, I completely disabled head 3, and now I can read sectors on the other three heads. Seems that the drive is just going unresponsive whenever it tries to use that head. Unfortunately there wasn't much data on this drive and head 3 was the first ~35Gb, so without it, all the data is gone. :roll:


Time to start looking for a donor I guess.
 

irs

Member
Hi Jared
When you see a grey error with a specified head, change head stack it's quite easy on Samsung drives to sort donors.
Bye
Luca
 

lcoughey

Moderator
This is not uncommon with Samsung drives...very large head maps, start with head 3 and almost always the first head is the bad one.
 
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