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unable to mount additional hdd

itachikonohaitachikonoha Member
edited October 2025 in Providers

hi, I've a hostc 5 tb storage server. Today I reinstalled the OS but unable to mount the additional storage after that. I am assuming when I reinstall, the secondary storage will remain unaffect and only the primary disk will be formatted.

lsblk output

NAME    MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sda       8:0    0    40G  0 disk
├─sda1    8:1    0    39G  0 part /
├─sda14   8:14   0     4M  0 part
├─sda15   8:15   0   106M  0 part /boot/efi
└─sda16 259:0    0   913M  0 part /boot
sdb       8:16   0   4.9T  0 disk
sr0      11:0    1     4M  0 rom
sr1      11:1    1  1024M  0 rom
sr2      11:2    1 598.4M  0 rom

Since there is no devices under sdb, I am unable to mount.

fdisk -l produces (for secondary disk):

Disk /dev/sdb: 4.88 TiB, 5368709120000 bytes, 10485760000 sectors
Disk model: QEMU HARDDISK
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

I haven't used linux that much so unable to move forward from here. If paritition table is indeed lost, without losing data, is it possible to recover?

Request to mods: Please move to appropriate section. I still don't know how to create a thread in a specific category in vanilla forum

Comments

  • dedipromodedipromo Member
    edited October 2025

    Edit: Ah, looks like partition table indeed lost. Better reach out to support.

  • @dedipromo said:
    You need to partition it first, then format it, and then mount it.

    Use something like fdisk /dev/sdb to create partitions.

    Once partitions are created, use something like mkfs -t ext4 /dev/sdb1 to format it to the FS you want.

    And then you can mount it.

    It had 4TB data before reinstalling the primary. I guess I have to accept that data have been lost.....

    Thanked by 1dedipromo
  • layer7layer7 Member, Host Rep, LIR
    edited October 2025

    @itachikonoha said:
    hi, I've a hostc 5 tb storage server. Today I reinstalled the OS but unable to mount the additional storage after that. I am assuming when I reinstall, the secondary storage will remain unaffect and only the primary disk will be formatted.

    Hi,

    assumption is the mother of every fuck up :)

    OS reinstall via template is with all providers i know a complete reinstall of the server.

    ( delete server -> create server ).

    Edit: try with testdisk if you are lucky....

  • @layer7 said:

    @itachikonoha said:
    hi, I've a hostc 5 tb storage server. Today I reinstalled the OS but unable to mount the additional storage after that. I am assuming when I reinstall, the secondary storage will remain unaffect and only the primary disk will be formatted.

    Hi,

    assumption is the mother of every fuck up :)

    OS reinstall via template is with all providers i know a complete reinstall of the server.

    ( delete server -> create server ).

    Edit: try with testdisk if you are lucky....

    assumption is the mother of every fuck up :)

    Wise words.

    Will try testdisk. let's see.

  • barbarosbarbaros Member
    edited October 2025

    Have you tried asking it nicely to get mounted?

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