I had an external hard-drive which got messed up. I then opened it and plugged the SATA-Hard-Drive directly into my computer. But after boot it is just showing my IDE-Hard-Drive on which the OS is. No secondary is shown.

sudo blkid -o list -w /dev/null

device                                                                            fs_type         label            mount point                                                                           UUID

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

/dev/sda1                                                                                                  ntfs                  System-reserviert      /media/System-reserviert                                                                                       FAE80411E803CB39

/dev/sda2                                                                                                  ntfs                                         /media/4AF809FAF809E4D3                                                                                        4AF809FAF809E4D3

/dev/sda5                                                                                                  ext4                                         /                                                                                                              fb8c4c85-12dc-44ad-a1e3-3b9b0ceb278f

/dev/sda6                                                                                                  ext4                                         /home                                                                                                          7560f5da-cd21-4fca-9d87-b8921c058b87

/dev/sda7                                                                                                  swap                                         <swap>                                                                                                         e8a31868-91c2-4da5-8551-f7a9a8d4e536

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fdisk -l

Platte /dev/sda: 203.9 GByte, 203927027200 Byte

255 Köpfe, 63 Sektoren/Spur, 24792 Zylinder

Einheiten = Zylinder von 16065 × 512 = 8225280 Bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0xa252a252



   Gerät  boot.     Anfang        Ende     Blöcke   Id  System

/dev/sda1   *           1          13      102400    7  HPFS/NTFS

Partition 1 endet nicht an einer Zylindergrenze.

/dev/sda2              13        8414    67481600    7  HPFS/NTFS

/dev/sda3            8415       24793   131560449    5  Erweiterte

/dev/sda5            8415       13278    39061504   83  Linux

/dev/sda6           13278       24219    87889920   83  Linux

/dev/sda7           24220       24793     4606976   82  Linux Swap / Solaris

-

sudo lsusb

Bus 007 Device 002: ID 03f0:0805 Hewlett-Packard HP4470C

Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 003 Device 003: ID 03f0:6204 Hewlett-Packard DeskJet 5150c

Bus 003 Device 002: ID 192f:0416 Avago Technologies, Pte. 

Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

I found some entries at the syslog which might be related:

[    0.771747] ata3: SATA max UDMA/133 cmd 0xd800 ctl 0xdc00 bmdma 0xe800 irq 19

[    6.320028] ata3: link is slow to respond, please be patient (ready=0)

[   10.820029] ata3: SRST failed (errno=-16)

[   16.370030] ata3: link is slow to respond, please be patient (ready=0)

[   20.390081] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)

[   20.410139] ata3.00: failed to IDENTIFY (INIT_DEV_PARAMS failed, err_mask=0x80)

[   30.940029] ata3: link is slow to respond, please be patient (ready=0)

[   35.440032] ata3: SRST failed (errno=-16)

[   40.990028] ata3: link is slow to respond, please be patient (ready=0)

[   44.230062] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)

[   44.250138] ata3.00: failed to IDENTIFY (INIT_DEV_PARAMS failed, err_mask=0x80)

[   44.250143] ata3: limiting SATA link speed to 1.5 Gbps

[   54.780030] ata3: link is slow to respond, please be patient (ready=0)

[   59.280027] ata3: SRST failed (errno=-16)

[   64.830029] ata3: link is slow to respond, please be patient (ready=0)

[   68.250061] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 310)

[   68.270137] ata3.00: failed to IDENTIFY (INIT_DEV_PARAMS failed, err_mask=0x80)

[   78.800049] ata3: link is slow to respond, please be patient (ready=0)

[   83.300049] ata3: SRST failed (errno=-16)

[   88.850030] ata3: link is slow to respond, please be patient (ready=0)

[   91.670060] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 310)

It is possible that not just the USB controller of the external shell got damaged, but also the drive itself.

But how do I make sure that the hard-drive is damaged, and therefore not showing itself in /dev?