Lacie Little Big Disk 1TB - Disk Utiltiy

Hi, can you please give me step-by-step instructions on how to re-mount my Lacie Little Big Disk 1 TB on my Apple MacBook Pro with Retina Display (Mid 2015) (macOS Catalina 10.15.3) as i've connected this via thunderbolt 2 port and i've not seen the image of this external hard drive been represented for it on the desktop, what do i need to do in disk utilities to remedy this and restore the external hard drive image for this particular Lacie Little Big Disk on my desktop?

I encountered the following in Disk Utility:

Uninitialised disk2s2 (Greyed out)
Uninitialised dsik3v2 (Greyed out)

disk 2s2 (Uninitialised) [511.77 TB]
disk 3s2 (Uninitialised) [511.77 TB]

Disk Utility - First Aid (Greyed out) Partition Erase Restore Mount

Mount Point: Not Mounted Type: Uninitialised
Capacity: 511.77 GB Owners: Disabled
Avaialble: Zero KB Connection: SATA
Used: — Device: disk2s2 / disk 3s2

And secondly once this issue of re-mounting and initialization has been resolved i would prefer to re-format & configurate my Lacie Little Big Disk 1TB from 2 x 511.77 TB (partition) to 1 x 1.02 TB, would you please be able to instruct me on how to do this?

I trust you understand this issue and i patiently await your reply to my problem

Kind Regards

I don't know if the video will help you out or not.