Can I add new XORs?

Typical Flash recovery cases

Moderators: Roman_TS, Dmitriy_TS, Filipp_TS


se134
Newbie
Posts: 3
Joined: 17.12.14
Reputation: 0 / (1)

Can I add new XORs?

Postby se134 » 18.06.19, 03:02

Hi there.
I have a problem with XOR detection.
The controller is SM3276L.
The memory chip has two parts, $89A46432 - AA010000 6WB2D_NW817 [SDR][Page: 18592 bytes(32 sectors).Block Size: 32768 sectors(1024 pages)] (x8)
Memory size is 64GB.
ECC detection is follows:
>>>>>>>>>>>>>>>>>>>>>>>>Detect ECC for PAGE = 18427 bytes
- 0 [1150]
- 1150 [1150]
- 2300 [1150]
- 3450 [1150]
- 4600 [1150]
- 5750 [1150]
- 6900 [1150]
- 8050 [1150]
- 9200 [1150]
- 10350 [1150]
- 11500 [1150]
- 12650 [1150]
- 13800 [1150]
- 14950 [1150]
- 16100 [1150]
- 17250 [1150]
- 18400 [27]

And XOR analysis detection is follows:
[18.06.2019 09:29:19]: XOR determination...........................
[18.06.2019 09:29:21]: Method will be started on result ID=573
[18.06.2019 09:29:22]: Build XOR list for analisys
[18.06.2019 09:29:22]: Select XOR by ECC format... ECC ID= 1930 18432;16-1150;27;
[18.06.2019 09:29:22]: Result XOR list:
[18.06.2019 09:29:22]: 0) ID=1931 : SM3267 BLK=256 PG=18432 (1150x16+27) 7F6090+ Block Convert Eq+ Page Convert
[18.06.2019 09:29:22]: 1) ID=2090 : SM3267L BLK=258 PG=18432 (1150x16+27SA) -> Skipped!!
[18.06.2019 09:29:22]: 2) ID=2184 : SM3267 BLK=128 PG=18592 (1150x16+27) PL2-3+ Block Convert Eq
[18.06.2019 09:29:22]: 3) ID=2183 : SM3267 BLK=128 PG=18592 (1150x16+27) PL0-1+ Block Convert Eq
[18.06.2019 09:29:22]: 4) ID=2249 : SM2703 BLK=1024 PG=18592 (1150x16+31)_D7AF47
[18.06.2019 09:29:22]: 5) ID=2307 : SM3267 BLK=256 PG=18592 (1150x16+31) D7AF47+ Block Convert Eq
[18.06.2019 09:29:22]: 6) ID=2397 : SM3268 BLK=384 PG=18432(1150x16+27) -> Skipped!!
[18.06.2019 09:29:22]: 7) ID=2415 : SM3268 BLK=2304 PG=18592 (1150x16+27) E8018F+ Block Convert Low
[18.06.2019 09:29:22]: 8) ID=2481 : FROM XOR ID=2415 BLK=2304 PG=18592
[18.06.2019 09:29:22]: XOR number to research:: 8
[18.06.2019 09:29:23]: --------------------------------------------
[18.06.2019 09:29:23]: XOR ID=2249 File Weight: 998 Other Weight: 217743 - Files( 1)
[18.06.2019 09:29:23]: XOR ID= 0 File Weight: 0 Other Weight: 48649 - Files( 0)
[18.06.2019 09:29:23]: XOR ID=2183 File Weight: 0 Other Weight: 29681 - Files( 0)
[18.06.2019 09:29:23]: XOR ID=2184 File Weight: 0 Other Weight: 19948 - Files( 0)
[18.06.2019 09:29:23]: XOR ID=2307 File Weight: 0 Other Weight: 4442581 - Files( 0)
[18.06.2019 09:29:23]: --------------------------------------------
[18.06.2019 09:29:23]: The most probable XOR : 2249
[18.06.2019 09:29:23]: .Confirmed!Removing...
[18.06.2019 09:29:26]: No found any page format for XOR ID= 2249 OK!
[18.06.2019 09:29:26]: Duration : 00:00:07
[18.06.2019 09:29:26]: The results are placed into the group Preparation results". IDs: "757,758

I select Page transformation:
Page size 18592
Sector size 543
Structure
0-512;18400-31;
512-512;18400-31;
1150-512;18400-31;
1662-512;18400-31;
2300-512;18400-31;
2812-512;18400-31;
3450-512;18400-31;
3962-512;18400-31;
4600-512;18400-31;
5112-512;18400-31;
5750-512;18400-31;
6262-512;18400-31;
6900-512;18400-31;
7412-512;18400-31;
8050-512;18400-31;
8562-512;18400-31;
9200-512;18400-31;
9712-512;18400-31;
10350-512;18400-31;
10862-512;18400-31;
11500-512;18400-31;
12012-512;18400-31;

And
Split by block(Block size:32768)
Join by Blocks/Pages for pairs(Block size:32)
Join by Blocks/Pages for pairs(Block size:64)

RawRecovery found many file headers but almost corrupted.
I think XOR 2249 is not match.
Can I add new XORs in the Resource?

Thanks

User avatar
Roman_TS
Site Admin
Posts: 437
Joined: 09.02.11
Reputation: 18 / (184)

Re: Can I add new XORs?

Postby Roman_TS » 18.06.19, 10:05

Hello. We are not provide technical support on forum. Please create a new ticket here:

https://ts.acelaboratory.com/index.php?/Tickets/Submit

We will guide you and will help with solution.
With best regards
ACELab technical support
ts.acelaboratory.com
blog.acelaboratory.com


Return to “Data Recovery from NAND Flash memory chips”

Who is online

Users browsing this forum: No registered users and 1 guest