$ sudo fdisk -l
Disk /dev/loop0: 1.99 GiB, 2109763584 bytes, 4120632 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop1: 55.48 MiB, 58159104 bytes, 113592 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop2: 218.102 MiB, 229629952 bytes, 448496 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop3: 64.79 MiB, 67915776 bytes, 132648 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop4: 51.4 MiB, 53522432 bytes, 104536 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop5: 31.9 MiB, 32595968 bytes, 63664 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/sda: 465.78 GiB, 500107862016 bytes, 976773168 sectors
Disk model: ST9500325AS
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xb4c0c308
Device Boot Start End Sectors Size Id Type
/dev/sda1 2048 976773119 976771072 465.8G 83 Linux
The primary GPT table is corrupt, but the backup appears OK, so that will be used.
Disk /dev/sdb: 111.81 GiB, 120034123776 bytes, 234441648 sectors
Disk model: KINGSTON SUV400S
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: FFF7340C-E82C-4993-B6FC-93951390DBF4
Device Start End Sectors Size Type
/dev/sdb1 2048 1050623 1048576 512M EFI System
/dev/sdb2 1050624 234440703 233390080 111.3G Linux filesystem
Disk /dev/sdc: 7.32 GiB, 7851737088 bytes, 15335424 sectors
Disk model: Transcend 8GB
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x77bdca59
Device Boot Start End Sectors Size Id Type
/dev/sdc1 * 2048 15335423 15333376 7.3G c W95 FAT32 (LBA)
Disk /dev/mapper/luks-07986967-d5d7-42ea-ae95-349367c8242b: 465.78 GiB, 500104691712 bytes, 976766976 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
$ sudo sfdisk -d /dev/sdb > PT_sdb.txt
The primary GPT table is corrupt, but the backup appears OK, so that will be used.
$ sudo gdisk /dev/sdb
GPT fdisk (gdisk) version 1.0.5
Caution: invalid main GPT header, but valid backup; regenerating main header
from backup!
Warning: Invalid CRC on main header data; loaded backup partition table.
Warning! One or more CRCs don't match. You should repair the disk!
Main header: ERROR
Backup header: OK
Main partition table: OK
Backup partition table: OK
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/sdb: 234441648 sectors, 111.8 GiB
Model: KINGSTON SUV400S
Sector size (logical/physical): 512/4096 bytes
Disk identifier (GUID): FFF7340C-E82C-4993-B6FC-93951390DBF4
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 234441614
Partitions will be aligned on 2048-sector boundaries
Total free space is 2925 sectors (1.4 MiB)
Number Start (sector) End (sector) Size Code Name
1 2048 1050623 512.0 MiB EF00 EFI System Partition
2 1050624 234440703 111.3 GiB 8300
Command (? for help): b
Enter backup filename to save: back-up-gpt-data-to-a-file
The operation has completed successfully.
Command (? for help): i
Partition number (1-2): 1
Partition GUID code: C12A7328-F81F-11D2-BA4B-00A0C93EC93B (EFI system partition)
Partition unique GUID: B896E463-C105-4953-A875-7CFE63F72D3D
First sector: 2048 (at 1024.0 KiB)
Last sector: 1050623 (at 513.0 MiB)
Partition size: 1048576 sectors (512.0 MiB)
Attribute flags: 0000000000000000
Partition name: 'EFI System Partition'
Command (? for help): i
Partition number (1-2): 2
Partition GUID code: 0FC63DAF-8483-4772-8E79-3D69D8477DE4 (Linux filesystem)
Partition unique GUID: 0A0D4866-A85A-4394-982F-C2DC4E80AD7A
First sector: 1050624 (at 513.0 MiB)
Last sector: 234440703 (at 111.8 GiB)
Partition size: 233390080 sectors (111.3 GiB)
Attribute flags: 0000000000000000
Partition name: ''
Command (? for help): l
Type search string, or Enter to show all codes:
0700 Microsoft basic data 0c01 Microsoft reserved
2700 Windows RE 3000 ONIE boot
3001 ONIE config 3900 Plan 9
4100 PowerPC PReP boot 4200 Windows LDM data
4201 Windows LDM metadata 4202 Windows Storage Spaces
7501 IBM GPFS 7f00 ChromeOS kernel
7f01 ChromeOS root 7f02 ChromeOS reserved
8200 Linux swap 8300 Linux filesystem
8301 Linux reserved 8302 Linux /home
8303 Linux x86 root (/) 8304 Linux x86-64 root (/)
8305 Linux ARM64 root (/) 8306 Linux /srv
8307 Linux ARM32 root (/) 8308 Linux dm-crypt
8309 Linux LUKS 830a Linux IA-64 root (/)
830b Linux x86 root verity 830c Linux x86-64 root verity
830d Linux ARM32 root verity 830e Linux ARM64 root verity
830f Linux IA-64 root verity 8310 Linux /var
8311 Linux /var/tmp 8400 Intel Rapid Start
8500 Container Linux /usr 8501 Container Linux resizable rootfs
8502 Container Linux /OEM customization 8503 Container Linux root on RAID
8e00 Linux LVM a000 Android bootloader
a001 Android bootloader 2 a002 Android boot 1
Press the Enter key to see more codes, q to quit: p
a003 Android recovery 1 a004 Android misc
a005 Android metadata a006 Android system 1
a007 Android cache a008 Android data
a009 Android persistent a00a Android factory
a00b Android fastboot/tertiary a00c Android OEM
a00d Android vendor a00e Android config
a00f Android factory (alt) a010 Android meta
a011 Android EXT a012 Android SBL1
a013 Android SBL2 a014 Android SBL3
a015 Android APPSBL a016 Android QSEE/tz
a017 Android QHEE/hyp a018 Android RPM
a019 Android WDOG debug/sdi a01a Android DDR
a01b Android CDT a01c Android RAM dump
a01d Android SEC a01e Android PMIC
a01f Android misc 1 a020 Android misc 2
a021 Android device info a022 Android APDP
a023 Android MSADP a024 Android DPO
a025 Android recovery 2 a026 Android persist
a027 Android modem ST1 a028 Android modem ST2
a029 Android FSC a02a Android FSG 1
a02b Android FSG 2 a02c Android SSD
Press the Enter key to see more codes, q to quit: q
Command (? for help): p
Disk /dev/sdb: 234441648 sectors, 111.8 GiB
Model: KINGSTON SUV400S
Sector size (logical/physical): 512/4096 bytes
Disk identifier (GUID): FFF7340C-E82C-4993-B6FC-93951390DBF4
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 234441614
Partitions will be aligned on 2048-sector boundaries
Total free space is 2925 sectors (1.4 MiB)
Number Start (sector) End (sector) Size Code Name
1 2048 1050623 512.0 MiB EF00 EFI System Partition
2 1050624 234440703 111.3 GiB 8300
Command (? for help): v
No problems found. 2925 free sectors (1.4 MiB) available in 2
segments, the largest of which is 2014 (1007.0 KiB) in size.
Command (? for help): p
Disk /dev/sdb: 234441648 sectors, 111.8 GiB
Model: KINGSTON SUV400S
Sector size (logical/physical): 512/4096 bytes
Disk identifier (GUID): FFF7340C-E82C-4993-B6FC-93951390DBF4
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 234441614
Partitions will be aligned on 2048-sector boundaries
Total free space is 2925 sectors (1.4 MiB)
Number Start (sector) End (sector) Size Code Name
1 2048 1050623 512.0 MiB EF00 EFI System Partition
2 1050624 234440703 111.3 GiB 8300
Command (? for help): w
Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!
Do you want to proceed? (Y/N): Y
OK; writing new GUID partition table (GPT) to /dev/sdb.
The operation has completed successfully.
