Now, use CCC (or SD) to clone the contents of the HiSierra install to the internal SSD. IF it cannot, you will need ANOTHER bootable external drive that has a copy of Sierra, El Capitan, etc., - that CAN initialize the Mac's internal drive to HFS+ with journaling enabled. We're going to have to await the public release to know this. NOTE: I'm not sure if the version of Disk Utility that will ship with the final release of HiSierra will re-initialize the internal SSD of a Mac to HFS+ with journaling enabled. Now, put CCC or SD on the hard drive with Hi Sierra. All you want to do is create a temporary account so that HiSierra is bootable from the hard drive. When done, do a brief initial setup, but DO NOT "sign into" Apple. Install a clean copy of HiSierra onto the platter-based hard drive. Have the HiSierra installer in your applications folder, and then create a bootable copy of the installer on a USB flashdrive. The following process might work only on Macs that DID NOT SHIP with HiSierra as the initial OS. You'll also need either CarbonCop圜loner or SuperDuper. NOTE: This requires that you also have either an external platter-based hard drive, or perhaps a USB flash drive of sufficient capacity to "hold the install".Īctually, I think a second flash drive will be needed, as well. Here is how I think it's possible to "work around" force-conversion to APFS when installing HiSierra onto an internal SSD.
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