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what exactly happened:
I have a Seagate 1 TB external hard disk.It was working fine till now.The problem started when I plugged it in my android phone and then back in my pc then simply it does not showup anywhere and :

  1. It does not appear in file explorer image

  2. It does not appear in disk management image

  3. It is not listed in Diskpart command image

  4. It only appears in Device Manager under disk drives image

  5. It does not appear in BIOS

  6. only makes sound when plugged and unplugged.

  7. disk spins and light is also showing.

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What I already tried:

  1. updated usb drivers.

  2. used new cable also.

  3. plugged in another pc

  4. usb mass storage is also enabled in BIOS

  5. no issue in any usb port
    Anything else i can do?

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8
  • Seems like the disk is dead and should be replaced. I suggest not plugging the replacement again into the phone.
    – harrymc
    Nov 29, 2020 at 18:53
  • How it can be dead , as disk was working fine with both phone and pc but now not detected in pc or phone.
    – Johnson
    Nov 29, 2020 at 19:02
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    Almost all dead disks worked correctly just before they died... Seriously, some circuit in the disk probably got fried. It might have been sub-standard to start with.
    – harrymc
    Nov 29, 2020 at 19:08
  • But It does show up in Device Manager...also disk light turns on when plugged in
    – Johnson
    Nov 29, 2020 at 19:18
  • 1
    You wrote: "It does not appear in disk management".
    – harrymc
    Nov 29, 2020 at 20:20

3 Answers 3

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Seems like the disk is dead and should be replaced.

The only place it is shown, in the Device Manager, it appears under a very generic name. The USB disk controller interface is identified, but no disk is found on it.

Some circuit on the disk was fried, or the firmware of the disk was damaged. You could get in touch with Seagate to ask for a utility that could rewrite the disk firmware, but I'm not too hopeful for that.

If you go for a replacement disk, I suggest not plugging it again into the phone.

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Disk's controller is dead or in failure mode. You can't fix it.

It's a 2.5" drive so it doesn't have external power supply. The phone may not be able to deliver enough power, leading to this corruption.

If the USB interface isn't integrated with the internal disk, but attached using a SATA adapter, you may be able to pull your data from the disk by detaching the adapter and plugging the disk directly into a desktop computer or another adapter. It's unlikely though, nearly all 2.5" external drives and even some 3.5" drives use integrated adapters nowadays. If that's the case, you'll need professional data recovery service to get your data.

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I had a similar problem and I thought my disk was dead when was not.

Because I used really bad chinese SATA adapter. Once I've connected it to the primary SATA in my notebook everything worked again.

However, plugging and unplugging your hard disk with bad adapters may lead your hard disk to corrupt easily.

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