External HHD is "Unfindable"!

[Nik9]

Hello, everyone..

I take photographs - MILLIONS of them.  (Yeah, I know!)  I 'happened upon' a WD HDD, and I just can't SEE it.  The connected noises happen, but nothing..  Any ideas?  And what's the UK number for Avast anyway?

Nik - "Millions?" 
Here's 30k: nikwatt.co.uk - I've been published locally, nationally, & internationally OVER 60,000 times (all Scotland - unedited!)

[Dinobot2]

How do you know this is Avast related?

[Cluster-Lizard2014]

How this has any connection to the use of AVAST baffles me. We don't even know whether the HDD is a new one or if it has the "millions" of photographs mentioned and has just suddenly stopped being recognised.

However, to be helpful, I'd suggest doing this:-

https://www.lifewire.com/how-to-open-disk-management-2626080

and checking whether the external HDD is seen there and, if new, initialized. If it is not then I'd try the HDD using a different external housing connection and if that doesn't work I'd suspect a problem with the HDD itself. 

[DavidR]

Baffles me too as to how it is connected to Avast reads more like promotion of a website (which could be considered spamming).

Are you getting any error or alert from Avast if so what  ?
Are you getting any error from Windows, if so what  ?
What version of Windows  ?

I have a Windows 10 laptop (details in my signature below posts) - I have several SSDs (4 all together) that I use for system and data backups, though no HDDs.

All can be view in windows explorer and I right click on the external drive and have Avast scan it.  So windows and Avast can see the the drive and Avast completed the scan successfully.