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My old hard drive has a dual boot system of Windows 7 and Ubuntu 16.04 on it. Before my old computer crashed I could not back up the data on it.

Now I want to get the data back, at least from the Ubuntu partition. The thing is when I plug in the old hard drive it is not being shown in the list of partitions in Nautilus.

disks however recognises a Hard Disk plugged in via USB but says it's "500GB Unkown" with device name /dev/sdb.

How can I normally mount the disk from within Ubuntu?

Outputs:

  1. vgscan (as suggested in this answer):

    Reading all physical volumes.  This may take a while...
    
  2. lsblk -f /dev/sdb:

    NAME FSTYPE LABEL UUID MOUNTPOINT
    sdb
    
  3. fdisk -l /dev/sdbfdisk -l /dev/sdb

    Disk /dev/sdb: 465.8 GiB, 500107862016 bytes, 976773168 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
    
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  • Your linked answer isn't applicable unless you had full disk encryption. The disk is most likely damaged.
    – user589808
    Jan 20, 2017 at 17:47
  • What's the output of sudo lsblk -f /dev/sdb? Replace /dev/sdb with whatever path the device happens to have after you connect it. Jan 20, 2017 at 19:01

1 Answer 1

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Seems you lost your partitions. You can try to recover your lost partitions if no more actions have been done to the disk (format, write...).

Boot from your new Ubuntu install on that machine, open a terminal and install testdisk with sudo apt install testdisk.

Then run sudo testdisk and follow the on screen menu-like instructions, to try to recover your partitions with this tool.

If you still can't recover them or want to see more options, check this link about partition recovery from Ubuntu wiki.

Hope it helps.

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  • Yes, the partitions seems lost. testdisk could not find any partitions while gpart only sees read errors :/ I am giving the disk to experts now.
    – MERose
    Jan 24, 2017 at 10:03

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