I fucked up the partitions on my 2017 iMac with Fusion drive a short while ago trying to create a dual boot system and even since my Mac was slow. I think from

I fucked up the partitions on my 2017 iMac with Fusion drive a short while ago trying to create a dual boot system and even since my Mac was slow. I think from beginning of start-up to a somewhat usable system was maybe 5 minutes? Quite long either way. But just last weekend got sick of the slowness and found there's a 'diskutil resetFusion' [0] command that restores the partitions to the default. So I ran this command, reinstalled the OS and now my iMac is pretty speedy again. Not great mind you, but way better then before. Lesson learned: dual boot on a Fusion drive is a bad idea. --- [0]: https://support.apple.com/en-us/HT207584 https://support.apple.com/en-us/HT207584