1. OS : Ubuntu 16.04.3 LTS
2. HDD : 8TB HDD

Symptom : /dev/sdb1 does not exist.

root@hprnd:/home/hprnd# mount /dev/sdb1 /hprnd0004
mount: special device /dev/sdb1 does not exist

root@hprnd:/home/hprnd# fdisk -l /dev/sdb
The primary GPT table is corrupt, but the backup appears OK, so that will be used.
Disk /dev/sdb: 7.3 TiB, 8000987201536 bytes, 15626928128 sectors
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: 3BC47CA0-6E0B-4157-A5C3-C50A7098DDEB

Device Start End Sectors Size Type
/dev/sdb1 34 15626928094 15626928061 7.3T Linux filesystem

Partition 1 does not start on physical sector boundary.

root@hprnd:/home/hprnd# parted /dev/sdb
GNU Parted 3.2
Using /dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p
Error: 부적절한 인수 during seek for read on /dev/sdb
Retry/Ignore/Cancel? c
Model: DELL PERC H730P Adp (scsi)
Disk /dev/sdb: 8001GB
Sector size (logical/physical): 512B/4096B
Partition Table: unknown
Disk Flags:
(parted) q

root@hprnd:/home/hprnd# gdisk -l /dev/sdb
GPT fdisk (gdisk) version 1.0.1

Warning! Disk size is smaller than the main header indicates! Loading
secondary header from the last sector of the disk! You should use 'v' to
verify disk integrity, and perhaps options on the experts' menu to repair
the disk.
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/sdb: 15626928128 sectors, 7.3 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 3BC47CA0-6E0B-4157-A5C3-C50A7098DDEB
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 15628053134
Partitions will be aligned on 8-sector boundaries
Total free space is 1125040 sectors (549.3 MiB)

Number Start (sector) End (sector) Size Code Name
1 34 15626928094 7.3 TiB 8300 segate8TB05

** How can I mount this disappeared partition on /dev/? **

  • You should use 'v' to verify disk integrity... – user692175 Dec 1 '17 at 10:43
  • Thank you for taking your time to answer. Could you let me know what the 'v' mean such as fdisk -v or parted -v?. Thank you for the reply, again. – 아리아니프티휴먼패스 Dec 4 '17 at 0:54
  • Like with any other command you can find information by typing man gdisk. Scrolling down you'l find the meaning for all the arguments. The quote was just a hint though, a hint for checking your drive for errors because it clearly has errors that are described in the error messages,. – user692175 Dec 4 '17 at 1:47

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