Mac Disk Utility hangs when erasing/partitioning

[Mario149]

I'm trying to erase/partition a new 512GB SSD that arrived today. But every time I try to erase or partition it, the progress bar hangs at half way after a few secs and nothing further happens. If it's an erase I'm doing, the time remaining sits at '1 min' for about 5 minutes, then slowly ticks up with nothing further happening.

Any ideas? I just need to get it formatted so I can clone another drive onto it using Super Duper. I've done it half a dozen times before but have never had this problem

[Mario149]

Not really, and I've actually connected the SSD internally as well. Oh well, will keep trying