External SSD for the new Mac Mini M4 - Apple Community This is orders of magnitude faster than the Crucial drives capability OWC has a long history of providing Mac-compatible solutions OWC claims that the OWC Envoy Ultra will do "over 6000 MB s" when connected to a Thunderbolt 5 port – such as the ones on the M4 Pro Mac mini The OP said they bought "the basic mac mini model with 250GB space "
Download sierra bootable installer - Apple Community The next section can only be done on a mac that is capable of running Sierra, a mac that came preinstalled with an OS later than Sierra will refuse to do the next bit When downloaded open to get InstallOS pkg, double-click on that and an installation window will open, read and follow the prompts,