External drive not working after trying to use it for Time Machine – Help!

bpkersey wrote:

I have a fairly new Lacie Rugged 5TB drive that was working perfectly fine and i wanted to set it up as my Time Machine drive. I selected the drive as my backup disc in Time Machine but immediately got the following error message:

https://discussions.apple.com/content/attachment/d3e7b678-c4da-439f-a0a4-30c6b1d2bc29

Now the Lacie drive doesn't even mount on my desktop! It appears in disc utility as 'disk2S2' but again, doesn't mount or appear on my desktop.

I tried using the mount function in disk utility but got this error message:

https://discussions.apple.com/content/attachment/04ec0e6c-d861-4900-b39a-c5be3281977f

I tried running disc first aid and got this error message:

https://discussions.apple.com/content/attachment/7bebfd42-0cc2-4b06-a997-b2e3da44d69a

Any ideas what's going on here or how to get my drive back to life? Like i say the Lacie drive was almost new and not cheap!!

My setup:

https://discussions.apple.com/content/attachment/b743a37c-ab13-4cdf-a1c2-8bbdcd562b0e

Thanks

How is that external drive formatted?

TM want to see GUID/HFS+ or GUID/APFS on a newer set up

https://support.apple.com/guide/mac-help/types-of-disks-you-can-use-with-time-machine-mh15139/mac