Windows 10: Why is my hard drive showing in Disk Management as Healthy but is not showing in file explorer.

I have a Hitachi 160GB 5400rpm 2.5 HDD connected to my computer. It is showing up in Disk Management as 2 partitions both healthy but it is not showing up in file explorer and I cannot assign a or change drive letters or paths in Disk Management. See screen shot attached.

:)

 

Hard drive showing up in disk management but not in file explorer

So I just finished building my new computer and I put a 2 tb firecuda sshd in it. I boute windows fine on my ssd and my hard drive showed up in the BIOS but it didn't show up in file explorer. I went to disk management and formatted it to be a basic drive
but it's still not showing up in file explorer.

 

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!

 

File Explorer doesn't show my external hard drive

File Explorer doesn't show my external hard drive even though it does in Device mgr. under USB devices. Upon opening Disk Mgr. it looks like the small partition is "healthy" but the rest of the hard drive says unallocated. When I plugged it in today I
got an error message that said it was too old for the 3.0 USB port but has been working fine previously. It has a lot of my backups on it so I would at least like to transfer them to a new hard drive. Any suggestions? I've tried it on another computer and
file explorer doesn't show it on that one either yet does in Device mrg. I'm running Windows 10 64 bit. Can't find a version #.

Thanks in advance!