MP 1,1-5,1 External drive will not mount

[petercorb]

I copied some files to my Lacie 2TB external HD. The operation seemed to be successful, however the disk showed up with no files. I ejected the disk and reinstalled – the Lacie will not mount on the desktop. It shows in the Disk Utility as "AppleAPFSMedia then underneath Uninitialised. In the info shown below the Partition Map: not supported
SMART status: not supported
I have tried disk repair, it will not initiate, it will not mount. I have even tried to do the same in Mac Recovery Disk Utility nothing works.
It's clear that the disk is somehow contaminated – can it be recovered?
I am using Big Sur 11.6.3

 

[paalb]

It is a good chance your disk is defect. Some times I have had success with mounting disks internally. Open up the external and mount the disk internally. You will get SMART status then if the disk supports it.

 

[petercorb]

It is a good chance your disk is defect. Some times I have had success with mounting disks internally. Open up the external and mount the disk internally. You will get SMART status then if the disk supports it.

Thanks for the tip; I tried an no luck ! I reckon its a gonner...