Recovering a GPT damaged partition
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Problem: 4TB drive can't be mounted. The drive is visible in gparted and gdisk but the GPT partition is reported as damaged.
Background information: Initially my setup consisted of 2 storage devices. My primary drive is a SSD with Windows 10. My secondary drive is a 4TB HDD.This setup worked well. I wanted to run linux on occasion so I installed another HDD. When installing Linux I removed the SATA and power from the Windows SSD and plugged them into the new HDD. I removed only the SATA cable from the 4TB HDD. I then proceed to installing CentOS. Finally reconnected the 4TB HDD, the SDD, and installed a new SATA cable and connected it to the new HDD. Using the boot menu I am able to switch between my Windows 10 and Linux installations. At this point I noticed that the 4TB HDD was not appearing in Windows or Linux.
Technical Information: I can't see the 4TB HDD in Windows using disk partition. I can see the drive in linux using gpart GUI and gdisk on the command line. 2 partitions are seen by the drive in gdisk and gparted.
Using Gparted:
When the drive is scanned by I get a prompt titled "Libparted Bug Found!" with text that reads "end of file while reading /dev/sda". Options are to retry, cancel, or ignore.
When I press ignore I get a prompt titled "Libparted Bug Found!" with text that reads "The primary GPT table is corrupt, but the backup appears OK, so that will be used." Options OK or cancel.
Using gdisk:
GPT fdisk (gdisk) version 0.8.6
Type device filename, or press <Enter> to exit: /dev/sda
Caution: invalid main GPT header, but valid backup; regenerating main header
from backup!
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: damaged
****************************************************************************
Caution: Found protective or hybrid MBR and corrupt GPT. Using GPT, but disk
verification and recovery are STRONGLY recommended.
****************************************************************************
Command (? for help): p
Disk /dev/sda: 7814037168 sectors, 3.6 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 07A40EF7-3F5A-42B8-BE06-6BC4D40492ED
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 7814037134
Partitions will be aligned on 8-sector boundaries
Total free space is 3693 sectors (1.8 MiB)
Number Start (sector) End (sector) Size Code Name
1 34 262177 128.0 MiB 0C01 Microsoft reserved part
2 264192 7814035455 3.6 TiB 0700 Basic data partition
Command (? for help): i
Partition number (1-2): 1
Partition GUID code: E3C9E316-0B5C-4DB8-817D-F92DF00215AE (Microsoft reserved)
Partition unique GUID: 07987030-5C4E-4936-9BCD-129C622C99DF
First sector: 34 (at 17.0 KiB)
Last sector: 262177 (at 128.0 MiB)
Partition size: 262144 sectors (128.0 MiB)
Attribute flags: 0000000000000000
Partition name: 'Microsoft reserved partition'
Command (? for help): i
Partition number (1-2): 2
Partition GUID code: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 (Microsoft basic data)
Partition unique GUID: 9A23AFCE-2382-4C1C-AC0B-F25E6428E4C4
First sector: 264192 (at 129.0 MiB)
Last sector: 7814035455 (at 3.6 TiB)
Partition size: 7813771264 sectors (3.6 TiB)
Attribute flags: 0000000000000000
Partition name: 'Basic data partition'
Command (? for help): v
Caution: Partition 1 doesn't begin on a 8-sector boundary. This may
result in degraded performance on some modern (2009 and later) hard disks.
Consult http://www.ibm.com/developerworks/linux/library/l-4kb-sector-disks/
for information on disk alignment.
No problems found. 3693 free sectors (1.8 MiB) available in 2
segments, the largest of which is 2014 (1007.0 KiB) in size.
How should gdisk or gparted be used in order to fix the damaged gpt partition without destroying the data on the drive?
gparted gpt gdisk
asked Feb 24 at 18:31
tuskerpi
11
add a comment |Â
up vote
0
down vote
favorite
Problem: 4TB drive can't be mounted. The drive is visible in gparted and gdisk but the GPT partition is reported as damaged.
Background information: Initially my setup consisted of 2 storage devices. My primary drive is a SSD with Windows 10. My secondary drive is a 4TB HDD.This setup worked well. I wanted to run linux on occasion so I installed another HDD. When installing Linux I removed the SATA and power from the Windows SSD and plugged them into the new HDD. I removed only the SATA cable from the 4TB HDD. I then proceed to installing CentOS. Finally reconnected the 4TB HDD, the SDD, and installed a new SATA cable and connected it to the new HDD. Using the boot menu I am able to switch between my Windows 10 and Linux installations. At this point I noticed that the 4TB HDD was not appearing in Windows or Linux.
Technical Information: I can't see the 4TB HDD in Windows using disk partition. I can see the drive in linux using gpart GUI and gdisk on the command line. 2 partitions are seen by the drive in gdisk and gparted.
Using Gparted:
When the drive is scanned by I get a prompt titled "Libparted Bug Found!" with text that reads "end of file while reading /dev/sda". Options are to retry, cancel, or ignore.
When I press ignore I get a prompt titled "Libparted Bug Found!" with text that reads "The primary GPT table is corrupt, but the backup appears OK, so that will be used." Options OK or cancel.
Using gdisk:
GPT fdisk (gdisk) version 0.8.6
Type device filename, or press <Enter> to exit: /dev/sda
Caution: invalid main GPT header, but valid backup; regenerating main header
from backup!
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: damaged
****************************************************************************
Caution: Found protective or hybrid MBR and corrupt GPT. Using GPT, but disk
verification and recovery are STRONGLY recommended.
****************************************************************************
Command (? for help): p
Disk /dev/sda: 7814037168 sectors, 3.6 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 07A40EF7-3F5A-42B8-BE06-6BC4D40492ED
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 7814037134
Partitions will be aligned on 8-sector boundaries
Total free space is 3693 sectors (1.8 MiB)
Number Start (sector) End (sector) Size Code Name
1 34 262177 128.0 MiB 0C01 Microsoft reserved part
2 264192 7814035455 3.6 TiB 0700 Basic data partition
Command (? for help): i
Partition number (1-2): 1
Partition GUID code: E3C9E316-0B5C-4DB8-817D-F92DF00215AE (Microsoft reserved)
Partition unique GUID: 07987030-5C4E-4936-9BCD-129C622C99DF
First sector: 34 (at 17.0 KiB)
Last sector: 262177 (at 128.0 MiB)
Partition size: 262144 sectors (128.0 MiB)
Attribute flags: 0000000000000000
Partition name: 'Microsoft reserved partition'
Command (? for help): i
Partition number (1-2): 2
Partition GUID code: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 (Microsoft basic data)
Partition unique GUID: 9A23AFCE-2382-4C1C-AC0B-F25E6428E4C4
First sector: 264192 (at 129.0 MiB)
Last sector: 7814035455 (at 3.6 TiB)
Partition size: 7813771264 sectors (3.6 TiB)
Attribute flags: 0000000000000000
Partition name: 'Basic data partition'
Command (? for help): v
Caution: Partition 1 doesn't begin on a 8-sector boundary. This may
result in degraded performance on some modern (2009 and later) hard disks.
Consult http://www.ibm.com/developerworks/linux/library/l-4kb-sector-disks/
for information on disk alignment.
No problems found. 3693 free sectors (1.8 MiB) available in 2
segments, the largest of which is 2014 (1007.0 KiB) in size.
How should gdisk or gparted be used in order to fix the damaged gpt partition without destroying the data on the drive?
gparted gpt gdisk
asked Feb 24 at 18:31
tuskerpi
11
Could you please clarify how Ubuntu is related to this question? This seems like a Windows/CentOS issue....
– user535733
Feb 24 at 21:13
My thought was they are both Linux derivatives. I did a search on askbuntu for CentOS and got other hits so I though it would be okay to post. Now that your questing it I did some looking and see there is a specific Unix & Linux SE site. I can't find how to migrate my question or I would do it now.
– tuskerpi
Feb 24 at 22:41
add a comment |Â
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Problem: 4TB drive can't be mounted. The drive is visible in gparted and gdisk but the GPT partition is reported as damaged.
Background information: Initially my setup consisted of 2 storage devices. My primary drive is a SSD with Windows 10. My secondary drive is a 4TB HDD.This setup worked well. I wanted to run linux on occasion so I installed another HDD. When installing Linux I removed the SATA and power from the Windows SSD and plugged them into the new HDD. I removed only the SATA cable from the 4TB HDD. I then proceed to installing CentOS. Finally reconnected the 4TB HDD, the SDD, and installed a new SATA cable and connected it to the new HDD. Using the boot menu I am able to switch between my Windows 10 and Linux installations. At this point I noticed that the 4TB HDD was not appearing in Windows or Linux.
Technical Information: I can't see the 4TB HDD in Windows using disk partition. I can see the drive in linux using gpart GUI and gdisk on the command line. 2 partitions are seen by the drive in gdisk and gparted.
Using Gparted:
When the drive is scanned by I get a prompt titled "Libparted Bug Found!" with text that reads "end of file while reading /dev/sda". Options are to retry, cancel, or ignore.
When I press ignore I get a prompt titled "Libparted Bug Found!" with text that reads "The primary GPT table is corrupt, but the backup appears OK, so that will be used." Options OK or cancel.
Using gdisk:
GPT fdisk (gdisk) version 0.8.6
Type device filename, or press <Enter> to exit: /dev/sda
Caution: invalid main GPT header, but valid backup; regenerating main header
from backup!
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: damaged
****************************************************************************
Caution: Found protective or hybrid MBR and corrupt GPT. Using GPT, but disk
verification and recovery are STRONGLY recommended.
****************************************************************************
Command (? for help): p
Disk /dev/sda: 7814037168 sectors, 3.6 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 07A40EF7-3F5A-42B8-BE06-6BC4D40492ED
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 7814037134
Partitions will be aligned on 8-sector boundaries
Total free space is 3693 sectors (1.8 MiB)
Number Start (sector) End (sector) Size Code Name
1 34 262177 128.0 MiB 0C01 Microsoft reserved part
2 264192 7814035455 3.6 TiB 0700 Basic data partition
Command (? for help): i
Partition number (1-2): 1
Partition GUID code: E3C9E316-0B5C-4DB8-817D-F92DF00215AE (Microsoft reserved)
Partition unique GUID: 07987030-5C4E-4936-9BCD-129C622C99DF
First sector: 34 (at 17.0 KiB)
Last sector: 262177 (at 128.0 MiB)
Partition size: 262144 sectors (128.0 MiB)
Attribute flags: 0000000000000000
Partition name: 'Microsoft reserved partition'
Command (? for help): i
Partition number (1-2): 2
Partition GUID code: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 (Microsoft basic data)
Partition unique GUID: 9A23AFCE-2382-4C1C-AC0B-F25E6428E4C4
First sector: 264192 (at 129.0 MiB)
Last sector: 7814035455 (at 3.6 TiB)
Partition size: 7813771264 sectors (3.6 TiB)
Attribute flags: 0000000000000000
Partition name: 'Basic data partition'
Command (? for help): v
Caution: Partition 1 doesn't begin on a 8-sector boundary. This may
result in degraded performance on some modern (2009 and later) hard disks.
Consult http://www.ibm.com/developerworks/linux/library/l-4kb-sector-disks/
for information on disk alignment.
No problems found. 3693 free sectors (1.8 MiB) available in 2
segments, the largest of which is 2014 (1007.0 KiB) in size.
How should gdisk or gparted be used in order to fix the damaged gpt partition without destroying the data on the drive?
gparted gpt gdisk
asked Feb 24 at 18:31
tuskerpi
11
Problem: 4TB drive can't be mounted. The drive is visible in gparted and gdisk but the GPT partition is reported as damaged.
Background information: Initially my setup consisted of 2 storage devices. My primary drive is a SSD with Windows 10. My secondary drive is a 4TB HDD.This setup worked well. I wanted to run linux on occasion so I installed another HDD. When installing Linux I removed the SATA and power from the Windows SSD and plugged them into the new HDD. I removed only the SATA cable from the 4TB HDD. I then proceed to installing CentOS. Finally reconnected the 4TB HDD, the SDD, and installed a new SATA cable and connected it to the new HDD. Using the boot menu I am able to switch between my Windows 10 and Linux installations. At this point I noticed that the 4TB HDD was not appearing in Windows or Linux.
Technical Information: I can't see the 4TB HDD in Windows using disk partition. I can see the drive in linux using gpart GUI and gdisk on the command line. 2 partitions are seen by the drive in gdisk and gparted.
Using Gparted:
When the drive is scanned by I get a prompt titled "Libparted Bug Found!" with text that reads "end of file while reading /dev/sda". Options are to retry, cancel, or ignore.
When I press ignore I get a prompt titled "Libparted Bug Found!" with text that reads "The primary GPT table is corrupt, but the backup appears OK, so that will be used." Options OK or cancel.
Using gdisk:
GPT fdisk (gdisk) version 0.8.6
Type device filename, or press <Enter> to exit: /dev/sda
Caution: invalid main GPT header, but valid backup; regenerating main header
from backup!
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: damaged
****************************************************************************
Caution: Found protective or hybrid MBR and corrupt GPT. Using GPT, but disk
verification and recovery are STRONGLY recommended.
****************************************************************************
Command (? for help): p
Disk /dev/sda: 7814037168 sectors, 3.6 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 07A40EF7-3F5A-42B8-BE06-6BC4D40492ED
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 7814037134
Partitions will be aligned on 8-sector boundaries
Total free space is 3693 sectors (1.8 MiB)
Number Start (sector) End (sector) Size Code Name
1 34 262177 128.0 MiB 0C01 Microsoft reserved part
2 264192 7814035455 3.6 TiB 0700 Basic data partition
Command (? for help): i
Partition number (1-2): 1
Partition GUID code: E3C9E316-0B5C-4DB8-817D-F92DF00215AE (Microsoft reserved)
Partition unique GUID: 07987030-5C4E-4936-9BCD-129C622C99DF
First sector: 34 (at 17.0 KiB)
Last sector: 262177 (at 128.0 MiB)
Partition size: 262144 sectors (128.0 MiB)
Attribute flags: 0000000000000000
Partition name: 'Microsoft reserved partition'
Command (? for help): i
Partition number (1-2): 2
Partition GUID code: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 (Microsoft basic data)
Partition unique GUID: 9A23AFCE-2382-4C1C-AC0B-F25E6428E4C4
First sector: 264192 (at 129.0 MiB)
Last sector: 7814035455 (at 3.6 TiB)
Partition size: 7813771264 sectors (3.6 TiB)
Attribute flags: 0000000000000000
Partition name: 'Basic data partition'
Command (? for help): v
Caution: Partition 1 doesn't begin on a 8-sector boundary. This may
result in degraded performance on some modern (2009 and later) hard disks.
Consult http://www.ibm.com/developerworks/linux/library/l-4kb-sector-disks/
for information on disk alignment.
No problems found. 3693 free sectors (1.8 MiB) available in 2
segments, the largest of which is 2014 (1007.0 KiB) in size.
How should gdisk or gparted be used in order to fix the damaged gpt partition without destroying the data on the drive?
gparted gpt gdisk
gparted gpt gdisk
asked Feb 24 at 18:31
tuskerpi
11
asked Feb 24 at 18:31
tuskerpi
11
asked Feb 24 at 18:31
tuskerpi
11
asked Feb 24 at 18:31
tuskerpi
11
asked Feb 24 at 18:31
tuskerpi
11
11
Could you please clarify how Ubuntu is related to this question? This seems like a Windows/CentOS issue....
– user535733
Feb 24 at 21:13
My thought was they are both Linux derivatives. I did a search on askbuntu for CentOS and got other hits so I though it would be okay to post. Now that your questing it I did some looking and see there is a specific Unix & Linux SE site. I can't find how to migrate my question or I would do it now.
– tuskerpi
Feb 24 at 22:41
add a comment |Â
Could you please clarify how Ubuntu is related to this question? This seems like a Windows/CentOS issue....
– user535733
Feb 24 at 21:13
My thought was they are both Linux derivatives. I did a search on askbuntu for CentOS and got other hits so I though it would be okay to post. Now that your questing it I did some looking and see there is a specific Unix & Linux SE site. I can't find how to migrate my question or I would do it now.
– tuskerpi
Feb 24 at 22:41
Could you please clarify how Ubuntu is related to this question? This seems like a Windows/CentOS issue....
– user535733
Feb 24 at 21:13
Could you please clarify how Ubuntu is related to this question? This seems like a Windows/CentOS issue....
– user535733
Feb 24 at 21:13
My thought was they are both Linux derivatives. I did a search on askbuntu for CentOS and got other hits so I though it would be okay to post. Now that your questing it I did some looking and see there is a specific Unix & Linux SE site. I can't find how to migrate my question or I would do it now.
– tuskerpi
Feb 24 at 22:41
My thought was they are both Linux derivatives. I did a search on askbuntu for CentOS and got other hits so I though it would be okay to post. Now that your questing it I did some looking and see there is a specific Unix & Linux SE site. I can't find how to migrate my question or I would do it now.
– tuskerpi
Feb 24 at 22:41
add a comment |Â
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Could you please clarify how Ubuntu is related to this question? This seems like a Windows/CentOS issue....
– user535733
Feb 24 at 21:13
My thought was they are both Linux derivatives. I did a search on askbuntu for CentOS and got other hits so I though it would be okay to post. Now that your questing it I did some looking and see there is a specific Unix & Linux SE site. I can't find how to migrate my question or I would do it now.
– tuskerpi
Feb 24 at 22:41