can I erase contents of Old LaCie and reuse on another computer

I have an old thunderbolt rugged 2 tb external drive which I used with my Imac 2009 I now have a new Imac and new Thunderbolt LaCie USB-c - can I erase the backups on the old LaCie and use it on another computer or just as a basic portable backup?

LaCie Rugged Thunderbolt/USB 3.0 Hard Drive

LaCie Rugged Thunderbolt/USB 3.0 Hard Drive

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