Seagate 3TB bad GPT partition, invalid header

How to use TestDisk to recover lost partition
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gunnyp
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Joined: 02 Aug 2015, 11:25

Seagate 3TB bad GPT partition, invalid header

#1 Post by gunnyp » 02 Aug 2015, 12:08

Thanks so much for your wonderful TestDisk. Have used to repair failed Raid0 in the past. This time a non-bootable, 1 Partition (not counting the Microsoft reserved 128MB), storage-only Seagate 3TB kept disappearing. I had run chkdsk before to repair damaged sectors and had moved all but 200GB to other backup. I started chkdsk again but it crashed repeatedly so tried TestDisk which reported bad GPT header and incorrect sector size. Ran Analyze which shocked me by jumping to 99% in half a second (Kudos on the speed-up) but pressing STOP did nothing. Third attempt on Quick Search I managed to hit STOP quickly enough to see Deeper Search option appear.

Don't know why my drives only show as Physical Drives and never in Disk /dev/sda as per your manuals?

Anywho, the drive in question is Disk \\.\PhysicalDrive4 . It should be identical in geometry to Disk \\.\PhysicalDrive7 as both same Seagate 3TB with one partition. But PhysicalDrive4 has Blocksize=512 whereas it should be Blocksize=4096 as in PhysicalDrive7.

However I am afraid to simply change the geometry until I backup the last remaining files which I am currently copying after successfully listing the files at the bottom of the TestDisk log, but it is taking forever.

Can I stop the slow copying and simply change the geometry to match that of the identical PhysicalDrive7 (CHS 45600 255 63, sector size=4096) and then somehow correct this quicker? If not, what steps should I take to actually write the found correct NTFS partition to the disk?

Here is the testdisk.log:



Sat Aug 01 23:33:20 2015
Command line: TestDisk

TestDisk 7.0, Data Recovery Utility, April 2015
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
OS: Windows 7 (7601) SP1
Compiler: GCC 4.9, MinGW 3.11
Compilation date: Apr 18 2015 13:02:07
ext2fs lib: none, ntfs lib: 10:0:0, reiserfs lib: none, ewf lib: 20120504, curses lib: pdcurses build 3401
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive0)=240057409536
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive1)=240057409536
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive2)=2000398934016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive3)=2000398934016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive4)=3000592982016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive5)=200049647616
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive6)=1000204886016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive7)=3000592977920
filewin32_getfilesize(\\.\PhysicalDrive8) GetFileSize err Incorrect function.


filewin32_setfilepointer(\\.\PhysicalDrive8) SetFilePointer err Incorrect function.


Warning: can't get size for \\.\PhysicalDrive8
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\C:)=239949840384
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\D:)=240051487744
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\E:)=2000263577600
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\F:)=2000263577600
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\G:)=3000457232384
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\H:)=79949689344
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\I:)=3000584577024
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\J:)=120097313280
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\K:)=0
Warning: can't get size for \\.\K:
filewin32_getfilesize(\\.\L:) GetFileSize err Incorrect function.


filewin32_setfilepointer(\\.\L:) SetFilePointer err Incorrect function.


Warning: can't get size for \\.\L:
filewin32_getfilesize(\\.\M:) GetFileSize err Incorrect function.


filewin32_setfilepointer(\\.\M:) SetFilePointer err Incorrect function.


Warning: can't get size for \\.\M:
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\N:)=1000202241024
filewin32_getfilesize(\\.\O:) GetFileSize err Incorrect function.


filewin32_setfilepointer(\\.\O:) SetFilePointer err Incorrect function.


Warning: can't get size for \\.\O:
filewin32_getfilesize(\\.\P:) GetFileSize err Incorrect function.


filewin32_setfilepointer(\\.\P:) SetFilePointer err Incorrect function.


Warning: can't get size for \\.\P:
filewin32_getfilesize(\\.\Q:) GetFileSize err Incorrect function.


filewin32_setfilepointer(\\.\Q:) SetFilePointer err Incorrect function.


Warning: can't get size for \\.\Q:
filewin32_getfilesize(\\.\R:) GetFileSize err Incorrect function.


filewin32_setfilepointer(\\.\R:) SetFilePointer err Incorrect function.


Warning: can't get size for \\.\R:
Hard disk list
Disk \\.\PhysicalDrive0 - 240 GB / 223 GiB - CHS 29185 255 63, sector size=512
Disk \\.\PhysicalDrive1 - 240 GB / 223 GiB - CHS 29185 255 63, sector size=512
Disk \\.\PhysicalDrive2 - 2000 GB / 1863 GiB - CHS 243201 255 63, sector size=512
Disk \\.\PhysicalDrive3 - 2000 GB / 1863 GiB - CHS 243201 255 63, sector size=512
Disk \\.\PhysicalDrive4 - 3000 GB / 2794 GiB - CHS 364801 255 63, sector size=512
Disk \\.\PhysicalDrive5 - 200 GB / 186 GiB - CHS 24321 255 63, sector size=512
Disk \\.\PhysicalDrive6 - 1000 GB / 931 GiB - CHS 121601 255 63, sector size=512
Disk \\.\PhysicalDrive7 - 3000 GB / 2794 GiB - CHS 45600 255 63, sector size=4096
Drive C: - 239 GB / 223 GiB - CHS 29172 255 63, sector size=512
Drive D: - 240 GB / 223 GiB - CHS 29184 255 63, sector size=512
Drive E: - 2000 GB / 1862 GiB - CHS 243184 255 63, sector size=512
Drive G: - 3000 GB / 2794 GiB - CHS 364784 255 63, sector size=512
Drive H: - 79 GB / 74 GiB - CHS 9719 255 63, sector size=512
Drive I: - 3000 GB / 2794 GiB - CHS 45600 255 63, sector size=4096
Drive J: - 120 GB / 111 GiB - CHS 14601 255 63, sector size=512
Drive N: - 1000 GB / 931 GiB - CHS 121600 255 63, sector size=512

Partition table type (auto): EFI GPT
Disk \\.\PhysicalDrive4 - 3000 GB / 2794 GiB
Partition table type: EFI GPT

Analyse Disk \\.\PhysicalDrive4 - 3000 GB / 2794 GiB - CHS 364801 255 63
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=5860533167 (expected 5860533167)
hdr_lba_start=34
hdr_lba_end=5860533134
hdr_lba_table=5860533168
hdr_entries=128
hdr_entsz=128
hdr_size=92
hdr_lba_self=5860533167
hdr_lba_alt=1 (expected 1)
hdr_lba_start=34
hdr_lba_end=5860533134
hdr_lba_table=5860533135
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 262177 262144 [Microsoft reserved partition]
Bad GPT partition, invalid header checksum.
Trying alternate GPT
No FAT, NTFS, ext2, JFS, Reiser, cramfs or XFS marker
1 P MS Reserved 34 262177 262144 [Microsoft reserved partition]
1 P MS Reserved 34 262177 262144 [Microsoft reserved partition]
2 P MS Data 264192 5860532223 5860268032 [Basic data partition]
Current partition structure:
Bad GPT partition, invalid header checksum.
Trying alternate GPT
No FAT, NTFS, ext2, JFS, Reiser, cramfs or XFS marker
1 P MS Reserved 34 262177 262144 [Microsoft reserved partition]
1 P MS Reserved 34 262177 262144 [Microsoft reserved partition]
2 P MS Data 264192 5860532223 5860268032 [Basic data partition]

search_part()
Disk \\.\PhysicalDrive4 - 3000 GB / 2794 GiB - CHS 364801 255 63
NTFS at 16/113/34
filesystem size 5860268032
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=135266304, part_size=3000457232384, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 16/113/34
filesystem size 5860268032
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 264192 5860532223 5860268032
NTFS, blocksize=4096, 3000 GB / 2794 GiB
Search for partition aborted

Results
P MS Data 264192 5860532223 5860268032
NTFS, blocksize=4096, 3000 GB / 2794 GiB

interface_write()
1 P MS Data 264192 5860532223 5860268032
$MFT has invalid magic.
ntfs_mft_load(): Failed.
Failed to load $MFT: Input/output error.
Failed to startup volume: Input/output error.
$MFT has invalid magic.
ntfs_mft_load(): Failed.
Failed to load $MFT: Input/output error.

search_part()
Disk \\.\PhysicalDrive4 - 3000 GB / 2794 GiB - CHS 364801 255 63
NTFS at 1/5/5
Warning: number of bytes per sector mismatches 4096 (NTFS) != 512 (HD)
filesystem size 732563456
sectors_per_cluster 1
mft_lcn 786432
mftmirr_lcn 366281727
clusters_per_mft_record 1
clusters_per_index_record 1
NTFS part_offset=8388608, part_size=3000579915776, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 1/5/5
Warning: number of bytes per sector mismatches 4096 (NTFS) != 512 (HD)
filesystem size 732563456
sectors_per_cluster 1
mft_lcn 786432
mftmirr_lcn 366281727
clusters_per_mft_record 1
clusters_per_index_record 1
MS Data 16384 5860524031 5860507648
NTFS, blocksize=4096, 3000 GB / 2794 GiB
NTFS at 16/113/34
filesystem size 5860268032
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=135266304, part_size=3000457232384, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 16/113/34
filesystem size 5860268032
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 264192 5860532223 5860268032
NTFS, blocksize=4096, 3000 GB / 2794 GiB
Search for partition aborted

Results
MS Data 16384 5860524031 5860507648
NTFS, blocksize=4096, 3000 GB / 2794 GiB
MS Data 264192 5860532223 5860268032
NTFS, blocksize=4096, 3000 GB / 2794 GiB

MS Data 16384 5860524031 5860507648
NTFS, blocksize=4096, 3000 GB / 2794 GiB
Can't open filesystem. Filesystem seems damaged.


dir_partition inode=5
MS Data 264192 5860532223 5860268032
NTFS, blocksize=4096, 3000 GB / 2794 GiB
Directory /
5 dr-xr-xr-x 0 0 0 1-Aug-2015 09:17 .
5 dr-xr-xr-x 0 0 0 1-Aug-2015 09:17 ..
36 dr-xr-xr-x 0 0 0 15-Jun-2015 22:40 $RECYCLE.BIN
354052 dr-xr-xr-x 0 0 0 14-Feb-2015 16:29 AVCHD
76246 dr-xr-xr-x 0 0 0 6-Feb-2015 07:44 AndroidApps
30657 dr-xr-xr-x 0 0 0 8-Jun-2014 17:56 Digital Multimeter Tutorials
242157 dr-xr-xr-x 0 0 0 26-Jun-2015 22:28 KindleBWWS
468 dr-xr-xr-x 0 0 0 27-Jun-2015 20:23 Maximus_V_Extreme
356180 dr-xr-xr-x 0 0 0 14-Feb-2015 19:54 Media
349565 dr-xr-xr-x 0 0 0 13-Feb-2015 07:58 Mondieu
17724 dr-xr-xr-x 0 0 0 24-Jan-2014 17:03 StockPhotos
39 dr-xr-xr-x 0 0 0 2-Feb-2014 05:51 System Volume Information
356251 dr-xr-xr-x 0 0 0 4-Jul-2015 02:17 Websites
13667 dr-xr-xr-x 0 0 0 16-Nov-2014 22:24 WorkingDocs
42 dr-xr-xr-x 0 0 0 24-Jan-2015 12:07 dwhelper
459 dr-xr-xr-x 0 0 0 12-Feb-2015 12:41 wamp
345103 -r--r--r-- 0 0 542 11-Aug-2004 20:20 Sample Music.lnk
502 -r--r--r-- 0 0 242176 7-Nov-2007 07:53 VC_RED.MSI
504 -r--r--r-- 0 0 1927956 7-Nov-2007 07:50 VC_RED.cab
491 -r--r--r-- 0 0 17734 7-Nov-2007 07:00 eula.1028.txt
492 -r--r--r-- 0 0 17734 7-Nov-2007 07:00 eula.1031.txt
493 -r--r--r-- 0 0 10134 7-Nov-2007 07:00 eula.1033.txt
495 -r--r--r-- 0 0 17734 7-Nov-2007 07:00 eula.1036.txt
496 -r--r--r-- 0 0 17734 7-Nov-2007 07:00 eula.1040.txt
497 -r--r--r-- 0 0 118 7-Nov-2007 07:00 eula.1041.txt
498 -r--r--r-- 0 0 17734 7-Nov-2007 07:00 eula.1042.txt
490 -r--r--r-- 0 0 17734 7-Nov-2007 07:00 eula.2052.txt
494 -r--r--r-- 0 0 17734 7-Nov-2007 07:00 eula.3082.txt

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