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corrupted partition table on external disk from an old dual boot

https://forum.cgsecurity.org/phpBB3/viewtopic.php?t=13158

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corrupted partition table on external disk from an old dual boot

Posted: 17 Aug 2025, 16:19
by apundir76
I had a laptop which had dual boot. windows 10 and ubuntu. I put its hard disk in an enclosure and was using it , one day i maximized one windows partition as linux partion was visible as unallocated space. now windows isn't recognizing it and disk management is showing it as unallocated space.
tried testdisk quick search which is showing
Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
Analyse cylinder 52426/121600: 43%
MS Data 2048 1085439 1083392 [Recovery]
EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
MS Data 1323008 416247154 414924147
MS Data 414973953 416247808 1273856
MS Data 416247808 417521663 1273856
MS Data 1323008 417523711 416200704
MS Data 417523711 833724414 416200704
it has become ultra slow after 42 %. there are overlapping area .in such case testdisk doc suggest to fix boot first.
start testdisk

select the device containing the partition (avoid drive letter like D:)

confirm the partition table type

go in the Advanced menu

select the NTFS partition

choose Boot

select RebuildBS

choose List.
now my scan isnt showing boot it show efi. further if I choose advance option it shows me only image creation option. someone help how to proceed. please note this was a dual boot hard disk but right now it was being used as and extarnal disk

Re: corrupted partition table on external disk from an old dual boot

Posted: 18 Aug 2025, 13:03
by recuperation
Please post your TestDisk log file and your smartmontools logfile.

How to extract SMART parameters:
viewtopic.php?f=5&t=10910

Re: corrupted partition table on external disk from an old dual boot

Posted: 18 Aug 2025, 16:28
by apundir76
This is what I have after running testdisk.
=====================================

Sun Aug 17 19:26:05 2025
Command line: TestDisk

TestDisk 7.3-WIP, Data Recovery Utility, April 2025
Christophe GRENIER <grenier@cgsecurity.org>
https://www.cgsecurity.org
OS: Windows 8 (9200)
Compiler: GCC 12.4, Cygwin32 3003.3
ext2fs lib: 1.45.3, ntfs lib: available, reiserfs lib: none, ewf lib: 20140608, curses lib: ncurses 6.1
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive0)=512110190592
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive1)=1000204884992
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\C:)=511043436544
Hard disk list
Disk \\.\PhysicalDrive0 - 512 GB / 476 GiB - CHS 62260 255 63, sector size=512 - SAMSUNG MZVL8512HELU-00BH1, S/N:0025_384A_41B2_B041., FW:HPS3NKXM
Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63, sector size=512 - Mass Storage Device, S/N:116AC2101219

Partition table type (auto): EFI GPT
Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - Mass Storage Device
Partition table type: EFI GPT

Interface Advanced
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525165 (expected 1953525165)
hdr_lba_start=34
hdr_lba_end=1953525132
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]

Analyse Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525165 (expected 1953525165)
hdr_lba_start=34
hdr_lba_end=1953525132
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
Current partition structure:
No FAT, NTFS, ext2, JFS, Reiser, cramfs or XFS marker
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]

search_part()
Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=1048576, part_size=554696704, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
FAT32 at 67/144/14
FAT1 : 6654-7422
FAT2 : 7423-8191
start_rootdir : 8192 root cluster : 2
Data : 8192-204799
sectors : 204800
cluster_size : 2
no_of_cluster : 98304 (2 - 98305)
fat_length 769 calculated 769
set_FAT_info: name from BS used

FAT32 at 67/144/14
FAT: cluster=2(0x2), pos=1093632
EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
NTFS at 82/90/9
filesystem size 414924147
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=677380096, part_size=212441163264, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 82/90/9
filesystem size 414924147
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
NTFS at 25910/58/5
filesystem size 1273856
sectors_per_cluster 8
mft_lcn 53077
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 414973953 416247808 1273856
NTFS found using backup sector, blocksize=4096, 652 MB / 622 MiB
NTFS at 25910/58/5
filesystem size 1273856
sectors_per_cluster 8
mft_lcn 53077
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 416247808 417521663 1273856
NTFS, blocksize=4096, 652 MB / 622 MiB
NTFS at 25989/165/32
filesystem size 416200704
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 1323008 417523711 416200704
NTFS found using backup sector, blocksize=4096, 213 GB / 198 GiB
NTFS at 25989/165/32
filesystem size 416200704
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 417523711 833724414 416200704
NTFS, blocksize=4096, 213 GB / 198 GiB
Search for partition aborted

Results
P MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
MS Data 1323008 417523711 416200704
NTFS found using backup sector, blocksize=4096, 213 GB / 198 GiB
MS Data 414973953 416247808 1273856
NTFS found using backup sector, blocksize=4096, 652 MB / 622 MiB
MS Data 416247808 417521663 1273856
NTFS, blocksize=4096, 652 MB / 622 MiB
MS Data 417523711 833724414 416200704
NTFS, blocksize=4096, 213 GB / 198 GiB

interface_write()
1 P MS Data 2048 1085439 1083392 [Recovery]
2 P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]

search_part()
Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=1048576, part_size=554696704, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
NTFS at 17/234/2
heads/cylinder 16 (NTFS) != 255 (HD)
sect/track 2 (NTFS) != 63 (HD)
filesystem size 6174
sectors_per_cluster 1
mft_lcn 2058
mftmirr_lcn 5162
clusters_per_mft_record 2
clusters_per_index_record 8
MS Data 281675 287848 6174
NTFS found using backup sector, blocksize=512, 3161 KB / 3087 KiB
NTFS at 17/234/2
heads/cylinder 16 (NTFS) != 255 (HD)
sect/track 2 (NTFS) != 63 (HD)
filesystem size 6174
sectors_per_cluster 1
mft_lcn 2058
mftmirr_lcn 5162
clusters_per_mft_record 2
clusters_per_index_record 8
MS Data 287848 294021 6174 [Boot]
NTFS, blocksize=512, 3161 KB / 3087 KiB
NTFS at 18/77/52
heads/cylinder 16 (NTFS) != 255 (HD)
sect/track 2 (NTFS) != 63 (HD)
filesystem size 6174
sectors_per_cluster 1
mft_lcn 2058
mftmirr_lcn 5162
clusters_per_mft_record 2
clusters_per_index_record 8
MS Data 287899 294072 6174
NTFS found using backup sector, blocksize=512, 3161 KB / 3087 KiB
NTFS at 18/77/52
heads/cylinder 16 (NTFS) != 255 (HD)
sect/track 2 (NTFS) != 63 (HD)
filesystem size 6174
sectors_per_cluster 1
mft_lcn 2058
mftmirr_lcn 5162
clusters_per_mft_record 2
clusters_per_index_record 8
MS Data 294072 300245 6174 [Boot]
NTFS, blocksize=512, 3161 KB / 3087 KiB
FAT32 at 67/144/14
FAT1 : 6654-7422
FAT2 : 7423-8191
start_rootdir : 8192 root cluster : 2
Data : 8192-204799
sectors : 204800
cluster_size : 2
no_of_cluster : 98304 (2 - 98305)
fat_length 769 calculated 769
set_FAT_info: name from BS used

FAT32 at 67/144/14
FAT: cluster=2(0x2), pos=1093632
EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
Search for partition aborted

Results
MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
MS Data 281675 287848 6174
NTFS found using backup sector, blocksize=512, 3161 KB / 3087 KiB
MS Data 287848 294021 6174 [Boot]
NTFS, blocksize=512, 3161 KB / 3087 KiB
MS Data 287899 294072 6174
NTFS found using backup sector, blocksize=512, 3161 KB / 3087 KiB
MS Data 294072 300245 6174 [Boot]
NTFS, blocksize=512, 3161 KB / 3087 KiB
P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB

interface_write()
1 P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
simulate write!

Analyse Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525165 (expected 1953525165)
hdr_lba_start=34
hdr_lba_end=1953525132
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
Current partition structure:
No FAT, NTFS, ext2, JFS, Reiser, cramfs or XFS marker
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]

search_part()
Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=1048576, part_size=554696704, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
FAT32 at 67/144/14
FAT1 : 6654-7422
FAT2 : 7423-8191
start_rootdir : 8192 root cluster : 2
Data : 8192-204799
sectors : 204800
cluster_size : 2
no_of_cluster : 98304 (2 - 98305)
fat_length 769 calculated 769
set_FAT_info: name from BS used

FAT32 at 67/144/14
FAT: cluster=2(0x2), pos=1093632
EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
NTFS at 82/90/9
filesystem size 414924147
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=677380096, part_size=212441163264, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 82/90/9
filesystem size 414924147
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
NTFS at 25910/58/5
filesystem size 1273856
sectors_per_cluster 8
mft_lcn 53077
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 414973953 416247808 1273856
NTFS found using backup sector, blocksize=4096, 652 MB / 622 MiB
NTFS at 25910/58/5
filesystem size 1273856
sectors_per_cluster 8
mft_lcn 53077
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 416247808 417521663 1273856
NTFS, blocksize=4096, 652 MB / 622 MiB
NTFS at 25989/165/32
filesystem size 416200704
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 1323008 417523711 416200704
NTFS found using backup sector, blocksize=4096, 213 GB / 198 GiB
NTFS at 25989/165/32
filesystem size 416200704
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 417523711 833724414 416200704
NTFS, blocksize=4096, 213 GB / 198 GiB
Search for partition aborted

Results
P MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
MS Data 1323008 417523711 416200704
NTFS found using backup sector, blocksize=4096, 213 GB / 198 GiB
MS Data 414973953 416247808 1273856
NTFS found using backup sector, blocksize=4096, 652 MB / 622 MiB
MS Data 416247808 417521663 1273856
NTFS, blocksize=4096, 652 MB / 622 MiB
MS Data 417523711 833724414 416200704
NTFS, blocksize=4096, 213 GB / 198 GiB
0 0000 0000 00 00 00 00 00 00 00 00
gpt_change_part_type
Change partition type:
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
Change partition type:
NTFS 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB

interface_write()
1 P MS Data 2048 1085439 1083392 [Recovery]
2 P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
simulate write!

Interface Advanced
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525165 (expected 1953525165)
hdr_lba_start=34
hdr_lba_end=1953525132
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]

Interface Advanced
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525165 (expected 1953525165)
hdr_lba_start=34
hdr_lba_end=1953525132
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]

Analyse Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525165 (expected 1953525165)
hdr_lba_start=34
hdr_lba_end=1953525132
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
Current partition structure:
No FAT, NTFS, ext2, JFS, Reiser, cramfs or XFS marker
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]

search_part()
Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=1048576, part_size=554696704, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
FAT32 at 67/144/14
FAT1 : 6654-7422
FAT2 : 7423-8191
start_rootdir : 8192 root cluster : 2
Data : 8192-204799
sectors : 204800
cluster_size : 2
no_of_cluster : 98304 (2 - 98305)
fat_length 769 calculated 769
set_FAT_info: name from BS used

FAT32 at 67/144/14
FAT: cluster=2(0x2), pos=1093632
EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
NTFS at 82/90/9
filesystem size 414924147
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=677380096, part_size=212441163264, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 82/90/9
filesystem size 414924147
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
Search for partition aborted

Results
P MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
P MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
0 0000 0000 00 00 00 00 00 00 00 00

interface_write()
1 P MS Data 2048 1085439 1083392 [Recovery]
2 P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
3 P MS Data 1323008 416247154 414924147

search_part()
Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=1048576, part_size=554696704, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
FAT32 at 67/144/14
FAT1 : 6654-7422
FAT2 : 7423-8191
start_rootdir : 8192 root cluster : 2
Data : 8192-204799
sectors : 204800
cluster_size : 2
no_of_cluster : 98304 (2 - 98305)
fat_length 769 calculated 769
set_FAT_info: name from BS used

FAT32 at 67/144/14
FAT: cluster=2(0x2), pos=1093632
EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
Search for partition aborted

Results
P MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB

interface_write()
1 P MS Data 2048 1085439 1083392 [Recovery]
2 P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
simulate write!

Analyse Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525165 (expected 1953525165)
hdr_lba_start=34
hdr_lba_end=1953525132
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
Current partition structure:
No FAT, NTFS, ext2, JFS, Reiser, cramfs or XFS marker
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]

search_part()
Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=1048576, part_size=554696704, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
FAT32 at 67/144/14
FAT1 : 6654-7422
FAT2 : 7423-8191
start_rootdir : 8192 root cluster : 2
Data : 8192-204799
sectors : 204800
cluster_size : 2
no_of_cluster : 98304 (2 - 98305)
fat_length 769 calculated 769
set_FAT_info: name from BS used

FAT32 at 67/144/14
FAT: cluster=2(0x2), pos=1093632
EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
NTFS at 82/90/9
filesystem size 414924147
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=677380096, part_size=212441163264, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 82/90/9
filesystem size 414924147
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
NTFS at 25910/58/5
filesystem size 1273856
sectors_per_cluster 8
mft_lcn 53077
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 414973953 416247808 1273856
NTFS found using backup sector, blocksize=4096, 652 MB / 622 MiB
NTFS at 25910/58/5
filesystem size 1273856
sectors_per_cluster 8
mft_lcn 53077
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 416247808 417521663 1273856
NTFS, blocksize=4096, 652 MB / 622 MiB
NTFS at 25989/165/32
filesystem size 416200704
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 1323008 417523711 416200704
NTFS found using backup sector, blocksize=4096, 213 GB / 198 GiB
NTFS at 25989/165/32
filesystem size 416200704
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 417523711 833724414 416200704
NTFS, blocksize=4096, 213 GB / 198 GiB
Search for partition aborted

Results
P MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
MS Data 1323008 417523711 416200704
NTFS found using backup sector, blocksize=4096, 213 GB / 198 GiB
MS Data 414973953 416247808 1273856
NTFS found using backup sector, blocksize=4096, 652 MB / 622 MiB
MS Data 416247808 417521663 1273856
NTFS, blocksize=4096, 652 MB / 622 MiB
MS Data 417523711 833724414 416200704
NTFS, blocksize=4096, 213 GB / 198 GiB

interface_write()
1 P MS Data 2048 1085439 1083392 [Recovery]
2 P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
simulate write!

Interface Advanced
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525165 (expected 1953525165)
hdr_lba_start=34
hdr_lba_end=1953525132
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]

Interface Advanced
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525165 (expected 1953525165)
hdr_lba_start=34
hdr_lba_end=1953525132
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]

Interface Advanced
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525165 (expected 1953525165)
hdr_lba_start=34
hdr_lba_end=1953525132
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]

Analyse Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525165 (expected 1953525165)
hdr_lba_start=34
hdr_lba_end=1953525132
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
Current partition structure:
No FAT, NTFS, ext2, JFS, Reiser, cramfs or XFS marker
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]

search_part()
Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=1048576, part_size=554696704, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
FAT32 at 67/144/14
FAT1 : 6654-7422
FAT2 : 7423-8191
start_rootdir : 8192 root cluster : 2
Data : 8192-204799
sectors : 204800
cluster_size : 2
no_of_cluster : 98304 (2 - 98305)
fat_length 769 calculated 769
set_FAT_info: name from BS used

FAT32 at 67/144/14
FAT: cluster=2(0x2), pos=1093632
EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
NTFS at 82/90/9
filesystem size 414924147
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=677380096, part_size=212441163264, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 82/90/9
filesystem size 414924147
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
NTFS at 25910/58/5
filesystem size 1273856
sectors_per_cluster 8
mft_lcn 53077
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 414973953 416247808 1273856
NTFS found using backup sector, blocksize=4096, 652 MB / 622 MiB
NTFS at 25910/58/5
filesystem size 1273856
sectors_per_cluster 8
mft_lcn 53077
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 416247808 417521663 1273856
NTFS, blocksize=4096, 652 MB / 622 MiB
NTFS at 25989/165/32
filesystem size 416200704
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 1323008 417523711 416200704
NTFS found using backup sector, blocksize=4096, 213 GB / 198 GiB
NTFS at 25989/165/32
filesystem size 416200704
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 417523711 833724414 416200704
NTFS, blocksize=4096, 213 GB / 198 GiB
Search for partition aborted

Results
P MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
MS Data 1323008 417523711 416200704
NTFS found using backup sector, blocksize=4096, 213 GB / 198 GiB
MS Data 414973953 416247808 1273856
NTFS found using backup sector, blocksize=4096, 652 MB / 622 MiB
MS Data 416247808 417521663 1273856
NTFS, blocksize=4096, 652 MB / 622 MiB
MS Data 417523711 833724414 416200704
NTFS, blocksize=4096, 213 GB / 198 GiB

interface_write()
1 P MS Data 2048 1085439 1083392 [Recovery]
2 P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]

search_part()
Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=1048576, part_size=554696704, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
FAT32 at 67/144/14
FAT1 : 6654-7422
FAT2 : 7423-8191
start_rootdir : 8192 root cluster : 2
Data : 8192-204799
sectors : 204800
cluster_size : 2
no_of_cluster : 98304 (2 - 98305)
fat_length 769 calculated 769
set_FAT_info: name from BS used

FAT32 at 67/144/14
FAT: cluster=2(0x2), pos=1093632
EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
Search for partition aborted

Results
P MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB

interface_write()
1 P MS Data 2048 1085439 1083392 [Recovery]
2 P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
gpt_change_part_type
Change partition type:
P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
Change partition type:
P FAT32 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB


dir_partition inode=5
P MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
Directory /
5 dr-xr-xr-x 0 0 0 21-Oct-2022 08:41 .
5 dr-xr-xr-x 0 0 0 21-Oct-2022 08:41 ..
40 dr-xr-xr-x 0 0 0 21-Oct-2022 08:41 Recovery
36 dr-xr-xr-x 0 0 0 29-Aug-2022 09:54 System Volume Information


dir_partition inode=0
P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
FAT: cluster=2(0x2), pos=1093632
Directory /
3 drwxr-xr-x 0 0 0 19-Sep-2024 15:54 EFI
26840 drwxr-xr-x 0 0 0 28-Aug-2022 21:24 System Volume Information
X 35 drwxr-xr-x 0 0 1024 14-Jul-2024 07:47 MSI9a82f.tmp

interface_write()
1 P MS Data 2048 1085439 1083392 [Recovery]
2 P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
simulate write!

Analyse Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525165 (expected 1953525165)
hdr_lba_start=34
hdr_lba_end=1953525132
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
Current partition structure:
No FAT, NTFS, ext2, JFS, Reiser, cramfs or XFS marker
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]

search_part()
Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=1048576, part_size=554696704, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
FAT32 at 67/144/14
FAT1 : 6654-7422
FAT2 : 7423-8191
start_rootdir : 8192 root cluster : 2
Data : 8192-204799
sectors : 204800
cluster_size : 2
no_of_cluster : 98304 (2 - 98305)
fat_length 769 calculated 769
set_FAT_info: name from BS used

FAT32 at 67/144/14
FAT: cluster=2(0x2), pos=1093632
EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
NTFS at 82/90/9
filesystem size 414924147
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=677380096, part_size=212441163264, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 82/90/9
filesystem size 414924147
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
NTFS at 25910/58/5
filesystem size 1273856
sectors_per_cluster 8
mft_lcn 53077
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 414973953 416247808 1273856
NTFS found using backup sector, blocksize=4096, 652 MB / 622 MiB
NTFS at 25910/58/5
filesystem size 1273856
sectors_per_cluster 8
mft_lcn 53077
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 416247808 417521663 1273856
NTFS, blocksize=4096, 652 MB / 622 MiB
NTFS at 25989/165/32
filesystem size 416200704
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 1323008 417523711 416200704
NTFS found using backup sector, blocksize=4096, 213 GB / 198 GiB
NTFS at 25989/165/32
filesystem size 416200704
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 417523711 833724414 416200704
NTFS, blocksize=4096, 213 GB / 198 GiB
Search for partition aborted

Results
P MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
MS Data 1323008 417523711 416200704
NTFS found using backup sector, blocksize=4096, 213 GB / 198 GiB
MS Data 414973953 416247808 1273856
NTFS found using backup sector, blocksize=4096, 652 MB / 622 MiB
MS Data 416247808 417521663 1273856
NTFS, blocksize=4096, 652 MB / 622 MiB
MS Data 417523711 833724414 416200704
NTFS, blocksize=4096, 213 GB / 198 GiB
gpt_change_part_type
Change partition type:
P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
Change partition type:
P FAT32 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
gpt_change_part_type
Change partition type:
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
Change partition type:
NTFS 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB

interface_write()
1 P MS Data 2048 1085439 1083392 [Recovery]
2 P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
simulate write!
New options :
Dump : No
Align partition: Yes
Expert mode : No

Analyse Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525165 (expected 1953525165)
hdr_lba_start=34
hdr_lba_end=1953525132
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
Current partition structure:
No FAT, NTFS, ext2, JFS, Reiser, cramfs or XFS marker
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]

search_part()
Disk \\.\PhysicalDrive1 - 1000 GB / 931 GiB - CHS 121601 255 63
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=1048576, part_size=554696704, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 0/32/33
filesystem size 1083392
sectors_per_cluster 8
mft_lcn 45141
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
FAT32 at 67/144/14
FAT1 : 6654-7422
FAT2 : 7423-8191
start_rootdir : 8192 root cluster : 2
Data : 8192-204799
sectors : 204800
cluster_size : 2
no_of_cluster : 98304 (2 - 98305)
fat_length 769 calculated 769
set_FAT_info: name from BS used

FAT32 at 67/144/14
FAT: cluster=2(0x2), pos=1093632
EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
NTFS at 82/90/9
filesystem size 414924147
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
NTFS part_offset=677380096, part_size=212441163264, sector_size=512
NTFS partition cannot be added (part_offset<part_size).
NTFS at 82/90/9
filesystem size 414924147
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
NTFS at 25910/58/5
filesystem size 1273856
sectors_per_cluster 8
mft_lcn 53077
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 414973953 416247808 1273856
NTFS found using backup sector, blocksize=4096, 652 MB / 622 MiB
NTFS at 25910/58/5
filesystem size 1273856
sectors_per_cluster 8
mft_lcn 53077
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 416247808 417521663 1273856
NTFS, blocksize=4096, 652 MB / 622 MiB
NTFS at 25989/165/32
filesystem size 416200704
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 1323008 417523711 416200704
NTFS found using backup sector, blocksize=4096, 213 GB / 198 GiB
NTFS at 25989/165/32
filesystem size 416200704
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
MS Data 417523711 833724414 416200704
NTFS, blocksize=4096, 213 GB / 198 GiB
Search for partition aborted

Results
P MS Data 2048 1085439 1083392 [Recovery]
NTFS, blocksize=4096, 554 MB / 529 MiB
P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
FAT32, blocksize=1024, 104 MB / 100 MiB
MS Data 1323008 416247154 414924147
NTFS, blocksize=4096, 212 GB / 197 GiB
MS Data 1323008 417523711 416200704
NTFS found using backup sector, blocksize=4096, 213 GB / 198 GiB
MS Data 414973953 416247808 1273856
NTFS found using backup sector, blocksize=4096, 652 MB / 622 MiB
MS Data 416247808 417521663 1273856
NTFS, blocksize=4096, 652 MB / 622 MiB
MS Data 417523711 833724414 416200704
NTFS, blocksize=4096, 213 GB / 198 GiB

interface_write()
1 P MS Data 2048 1085439 1083392 [Recovery]
2 P EFI System 1085440 1290239 204800 [EFI System Partition] [NO NAME]
simulate write!

Interface Advanced
hdr_size=92
hdr_lba_self=1
hdr_lba_alt=1953525165 (expected 1953525165)
hdr_lba_start=34
hdr_lba_end=1953525132
hdr_lba_table=2
hdr_entries=128
hdr_entsz=128
check_part_gpt failed for partition
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
gpt_change_part_type
Change partition type:
1 P MS Reserved 34 32767 32734 [Microsoft reserved partition]
Change partition type:
1 P Unknown 34 32767 32734 [Microsoft reserved partition]

TestDisk exited normally.

Re: corrupted partition table on external disk from an old dual boot

Posted: 20 Aug 2025, 06:33
by recuperation
If you wonder why I have not answered yet:
I am waiting for the smartmontools log file!
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