I’m trying during the installation from MacOS High Sierra to separate the system and user data. I splitted the SSD with Disk Utility, but I can’t mount the second APFS Volume to /Users with the Disk Utility. Is that possible at this stage?
MacOS – Mount APFS Volume to /Users with the Disk Utility during the installation
disk-utilitymacos
Best Answer
Not with Disk Utility (can't specify custom mount points with Disk Utility) but the macOS installer environment has Terminal. With Terminal, you can run:
Replace disk1s3 with the identifier of the volume to mount there.
This should answer your question about mounting during installation, but after a reboot your disk will be unmounted and /Users unavailable. To permanently set a mount point, you'll have to mess with fstab.