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External Disk Rescue-Partition lost while changing from NTFS to FAT32


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#1 syl2013

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Posted 23 March 2016 - 10:58 PM

Hi,

 

I was using AOM Partition Manager to change the format type of a partition (from NTFS to FAT32) and after a day it get stucked and the process was interrupted on the 70%. The partition of the extenal disk with USB connection of 1.53GB disapeared in windows.

 

The partition seems to remain in NTFS. Which is the best way to rescue the data on the damaged partition (1 and 2) from the current disk structure? I run the SMART test at DiskHealth of partedmagic 7 and it passed.

Current partition structure:
     Partition                  Start        End    Size in sectors

 1 P HPFS - NTFS          38118   0  3 243201  13 12 3294659224
 2 E extended LBA            74   0 56 38117 254 62  611176804
No partition is bootable
 5 L FAT32                   74   1 56 38117 254 62  611176741 [PART1]

=== START OF INFORMATION SECTION ===
User Capacity:    2,000,398,934,016 bytes [2.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    7200 rpm
Form Factor:      3.5 inches

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
See vendor-specific Attribute list for marginal Attributes.

General SMART Values:
Offline data collection status:  (0x00)	Offline data collection activity
					was never started.
					Auto Offline Data Collection: Disabled.
Self-test execution status:      (   0)	The previous self-test routine completed
					without error or no self-test has ever 
					been run.
Total time to complete Offline 
data collection: 		(  584) seconds.
Offline data collection
capabilities: 			 (0x73) SMART execute Offline immediate.
					Auto Offline data collection on/off support.
					Suspend Offline collection upon new
					command.
					No Offline surface scan supported.
					Self-test supported.
					Conveyance Self-test supported.
					Selective Self-test supported.
SMART capabilities:            (0x0003)	Saves SMART data before entering
					power-saving mode.
					Supports SMART auto save timer.
Error logging capability:        (0x01)	Error logging supported.
					General Purpose Logging supported.
Short self-test routine 
recommended polling time: 	 (   1) minutes.
Extended self-test routine
recommended polling time: 	 ( 227) minutes.
Conveyance self-test routine
recommended polling time: 	 (   2) minutes.
SCT capabilities: 	       (0x3085)	SCT Status supported.

SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   116   099   006    Pre-fail  Always       -       109545760
  3 Spin_Up_Time            0x0003   096   095   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   100   100   020    Old_age   Always       -       229
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   066   060   030    Pre-fail  Always       -       8598765263
  9 Power_On_Hours          0x0032   100   100   000    Old_age   Always       -       766
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       179
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
188 Command_Timeout         0x0032   100   099   000    Old_age   Always       -       0 0 1
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   066   045   045    Old_age   Always   In_the_past 34 (Min/Max 19/34)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       53
193 Load_Cycle_Count        0x0032   100   100   000    Old_age   Always       -       244
194 Temperature_Celsius     0x0022   034   055   000    Old_age   Always       -       34 (0 15 0 0 0)
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       774h+17m+00.884s
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       9221124438
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       24708336716

SMART Error Log Version: 1
No Errors Logged


SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Conveyance offline  Completed without error       00%       765         -
# 2  Short offline       Completed without error       00%       765         -

SMART Selective self-test log data structure revision number 1
 SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS
    1        0        0  Not_testing
    2        0        0  Not_testing
    3        0        0  Not_testing
    4        0        0  Not_testing
    5        0        0  Not_testing
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.

And could the data be copied part of it to one disk and part to another target disk?

 

Any help would be greatly appreciated.

 

Best!


Edited by hamluis, 20 March 2017 - 04:40 PM.
Moved from External Hardware to Disk Managemenrt - Hamluis.


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#2 syl2013

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Posted 24 March 2016 - 02:14 AM

After runing the quick TestDisk analysis, this is the output of the console>

Disk /dev/sdc - 2000 GB / 1863 GiB - CHS 243201 255 63

The harddisk (2000 GB / 1863 GiB) seems too small! (< 4777 GB / 4449 GiB)
Check the harddisk size: HD jumpers settings, BIOS detection...

The following partition can't be recovered:
     Partition               Start        End    Size in sectors
>  FAT16 <32M           423393  65 27 580815 213 63 2528993791


The log output>

Partition table type (auto): Intel
Disk /dev/sdc - 2000 GB / 1863 GiB - Seagate Expansion Desk
Partition table type: Intel

Analyse Disk /dev/sdc - 2000 GB / 1863 GiB - CHS 243201 255 63
Geometry from i386 MBR: head=255 sector=63
NTFS at 38118/0/3
FAT32 at 74/1/56
Info: size boot_sector 611176741, partition 611176741
FAT1 : 40-74628
FAT2 : 74629-149217
start_rootdir : 229259874 root cluster : 3579856
Data : 149218-611176737
sectors : 611176741
cluster_size : 64
no_of_cluster : 9547305 (2 - 9547306)
fat_length 74589 calculated 74589
Current partition structure:
 1 P HPFS - NTFS          38118   0  3 243201  13 12 3294659224
 2 E extended LBA            74   0 56 38117 254 62  611176804
No partition is bootable
 5 L FAT32                   74   1 56 38117 254 62  611176741 [PART1]

Edited by syl2013, 24 March 2016 - 02:19 AM.


#3 JohnC_21

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Posted 24 March 2016 - 10:10 AM

If you used Aoemi Partition Assistant to convert the partition see if you can detect the partitions using it's partition recovery. Do a Fast Search and if that does not work do a Full Search. Double Click the found partitions. Do you see your files? 

 

Because this was a bad conversion of a file system I am not sure you will be able to recover your files.

 

http://www.disk-partition.com/help/partition-recovery.html



#4 syl2013

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Posted 20 March 2017 - 11:46 AM

Using AOMEI didn't worked. It didn't find the partition it damaged neither.


Edited by syl2013, 20 March 2017 - 05:24 PM.


#5 JohnC_21

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Posted 20 March 2017 - 12:04 PM

It's been almost a year since your last post. Did you eventually get your data back or did you give up? Did you try doing a quick and full search using Testdisk?



#6 syl2013

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Posted 20 March 2017 - 05:15 PM

Hi, John,

 

With quick analysis it said the partition can't be recovered. And it didn't showed the name of the partition neither named it as a partition. I kept the disk without using it. I would like to recover the information.

 

Best


Edited by syl2013, 20 March 2017 - 05:16 PM.


#7 JohnC_21

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Posted 20 March 2017 - 05:50 PM

Using Testdisk there is a Deeper Search Option. If a partition is found highlight it and press the "P" key. Do you see your files? Also run Testdisk and select Advanced > Boot if this is a bootable disk. See if the boot sector is damaged.

 

If the Deeper Search does not find a partition then you can use Easeus Data Recovery or Minitools Data Recovery to scan the drive. They allow from 1 to 2 GB for free. If you do not want to purchase software there is a program with Testdisk called Photorec. This will recovery files in realtime to the folder to unzipped Testdisk to. You need at least the same amount of free space than what data you are recovering. Also all files recovered will have generic names with the correct extension. In Photorec be sure to choose the extensions you wish to recover or it will recover all files it finds.

 

http://www.cgsecurity.org/wiki/PhotoRec_Step_By_Step



#8 syl2013

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Posted 21 March 2017 - 01:06 AM

After doing the BOOT and rebooting, the partition seems to be recognized but is says that "space conflict between the following two partitions". How to know which one is the real one?

 

What  is the undeletecommand for at testdisk?

 

 

Drive E: - 1686 GB / 1571 GiB - CHS 205083 255 63
Current partition structure:
     Partition                  Start        End    Size in sectors
    Previous
  3 * Unixware, HURD, SCO  112788  42 36 146661 128  8  544175136

 Bad relative sector.
  4 * SpeedStor            164531 118 14 164534 144 17      49837

 Bad relative sector.
 Only one partition must be bootable
 Space conflict between the following two partitions
  1 * Sys=0D               33608  41  7 146863  19 12 1819440195
  2 * Sys=2B               101757 191 53 220943 217 46 1914724722
 Space conflict between the following two partitions
  2 * Sys=2B               101757 191 53 220943 217 46 1914724722
> 3 * Unixware, HURD, SCO  112788  42 36 146661 128  8  544175136

*=Primary bootable  P=Primary  L=Logical  E=Extended  D=Deleted
>[Quick Search]  [ Backup ]
                            Try to locate partition


#9 syl2013

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Posted 21 March 2017 - 02:10 AM

I see the files with the advanced options. Can I use the undelete to recover them with the directory structure? By the way on windows with AOMEI only 170 MB are shown as be used on the disk. But as shown in testdisk 1571 MB are used of the partition to recover.

 

The photorec project a recovery time of 700 hours and without preserving the directory structure.

 

Best,



#10 JohnC_21

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Posted 21 March 2017 - 07:27 AM

If there was a deleted partition you would see a D prefix before the partition but from your log it seems you have multiple bootable partitions. If you see the files in the Advanced Options that is good. You can select them with the ":" key and then use the upper case "C" key to copy the files. The default destination is the folder you unzipped Testdisk to. I would only copy a few at first to see if they can be opened or not. If you have an external drive with enough free space unzip Testdisk to the root of the external drive and launch it from there. Then you can use the lower case "a" key to select all files and folders. Press upper case "C" and then confirm the location for the files to be copied to your external drive. The directory structure will remain intact.



#11 syl2013

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Posted 24 March 2017 - 07:14 PM

Hi John, I try copying a folder and the internal structure of other forlders was copied with the copy command of the advanced option, but not all the files were copied. Then I saw at the original disk and although it shows some information, it doesn't show it complete and is not foun on the deep analysis. Was it the way to copy the files?



#12 JohnC_21

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Posted 24 March 2017 - 07:44 PM

Yes, I believe you copied the file correctly but some may have been corrupted during the change from NTFS to FAT32 and therefore you were not able to recover all files. 

 

Did you lose many files? You may want to try scanning the drive with Easeus Data Recovery although this is paid software. It will let you recover up to 2GB for free.






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