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You should upgrade or use an alternative browser. Hi there,

I have a 2017 iMac 27" with a 2T fusion drive and 40GB RAM. It was becoming slower and slower so I created a bootable SSD which I now use as my main drive and it's much faster with most things. I know it might be considered obsolete now but am waiting for M4 Macs.

But although I can boot into the SSD when the computer is off using the option key to select it, whenever I do a restart the option to choose SSD is not present and despite selecting the SSD as the startup disc in settings, the restart always defaults to the native Macintosh HD. I've attached a screenshot of the discs from disk utility - have I managed to mess up the containers / volumes on the SSD? is there a simple solution?

Many thanks in anticipation.

David