Windows 10: External Hard disk not Showing up in disk management and diskpart

Hi, recently I wanted to format my fat32 external hard disk to NTFS. I copied the files and in between the copy was stopped and my laptop was hanged, when I unplugged the external hard disk the hang issue was sorted. When I again inserted my hard disk, it hung again, somehow, I managed to format it to NTFS. When it was formatted it was working fine, I unplugged it, when I again inserted it, my laptop was not reading it. I tried disk management, but my disk management was unable to load when ext. hard disk was inserted, it's stuck on "Connecting to virtual device", same goes for diskpart, it's

:)

 

Disk showing in Disk Management, But not DiskPart

Hello!

So, today I was doing a friend a favor, he had an old 1TB hard drive with important photos on it. He said he would appreciate it if I could move the photos to a different hard drive.

So, I hooked it up to my self-built PC (with a SATA port) and it didn't show up in file explorer.

So, I checked Disk Management to see if it would show up there, and it did. I later realized why it didn't show up in file explorer (Because it didn't have a drive letter). In Disk Management, I right clicked the primary partition only to find that it wouldn't
let me assign a drive letter.

I remembered there was another way to assign drive letters, with DiskPart. So I typed this into Command Prompt:

diskpart > list volume

In DiskPart, It showed the drive's EFI system partition (partition 1) but not the (Healthy) Primary Partition (partition 2).

Also in DiskPart, I could type "list disk" and it would show me the 1TB drive, if I then typed "list partition" it would show me the different partitions, but wouldn't let me assign a drive letter to them.

In summary, Disk Management showed the partition, but wouldn't assign a drive letter. DiskPart showed the partition 1, but not the primary partition.

My objective is to show the photos located on the 1TB drive's 2nd partition without erasing it.

I would be happy to add pictures if necessary.

Thanks!

 

diskpart doesn't show disk

Hey,

I am trying to install Win10 on a mac book air.

However the diskpart does not list the disk even after reformatting the partition as NTFS per suggestion.

read through this solution but cannot move to step 1 listed in the solution by Ivan as that disk doesn't see that partition it was just able to reformat.

Regards

 

external hard drive showing up in device management but not disk management

I had a similar problem. I put an old laptop hard drive into a Rosewill USB hard drive enclosure. It showed up just fine when connected to one laptop. However, when I connected it to a different laptop, it showed up in Device Manager, but not in Disk Management
or Explorer.

I double-clicked the drive in Device Manager to get into Properties, then went to the Volume tab, then clicked "Populate." This showed the drive to be "Offline."

To make the drive "Online," I did the following:

1. Go to an elevated command prompt: Right-click on start button > Select Command Prompt (Admin). Enter the following commands (in bold).

2. diskpart

The command prompt will change to: DISKPART>

3. list disk

All disks will be listed. Note the number of the disk you want to make to go online.

4. select disk 2

Instead of 2, substitute the number of your disk.

5. online disk

If this command is successfully executed, you will get a message that reads, "DiskPart successfully onlined the selected disk."

It took me a long time to find this solution, so I'm putting it here hoping that it helps the next person.