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I have a Seagate 2.0 TB HDD. I had Ubuntu installed on it and grub on my SSD. I removed the cable when trying to change it. After that when I plugged it in grub showed the black error screen with grub>. I had a dual boot on the SSD with Windows and I removed it by fresh-installing Ubuntu.

My HDD showed an error when I opened it in disk management on Windows originally and asked about creating GPT or MBR but both commands failed. Additionally it showed on 3.9 GB as the maximum available/formatable size.

Now I am on Ubuntu. My drive shows up in disk menu as 4.1 GB, not 1.84 TB, as does another of my correctly working 2 TB one, but not in fdisk. I tried secure erase but it gives an error.

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Error when secure erasing:

Issuing SECURITY_ERASE command, password="pwdsw", user=user SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 04 51 40 00 21 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 04 51 40 01 21 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

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  • 1) Please see Hard Drive error: bad/missing sense data. 2) Do you need to recover any data from the Seagate 2.0 TB HDD?
    – Andrew Morton
    Aug 21, 2020 at 9:37
  • No I do not need to recover any data, secondly I saw the answer but mine was plugged in directly by SATA although a cheaper cabke but that didnt give any major errors in the past. I will try sdparm one though.
    – csgeek
    Aug 22, 2020 at 9:06
  • Have you tried using Seagate's SeaTools to check the drive?
    – Andrew Morton
    Aug 22, 2020 at 18:44
  • I remember correctly it did show some error but nothing that was helpful.
    – csgeek
    Aug 23, 2020 at 3:00
  • You might as well use SeaTools to format (not just erase) the drive and see if it corrects the problem. Does it report the correct drive model?
    – Andrew Morton
    Aug 27, 2020 at 9:00

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