I have a MacMini from 2014.
It has an SSD which I formatted so now it has no OS on it. I tried internet recovery several times but every time I get the error "An Error Occurred While Preparing the Installation". I have tried it again and again after restarting and after formatting again and after using first aid too.
Then I resorted to installing MacOS Sierra using a Bootable USB. I used TransMac to format it and then restore it with the image file of MacOS I downloaded from the site:
https://support.apple.com/en-us/HT211683
Upon Boot it only showed the Internet recovery option nothing else. It didn't read my USB. I formatted the USB from disk utility with GUID partition scheme and then again chose the restore with image file option and again my MacMini did not read it.
- I don't have any AppleStore in my country so I might not be able to get their help in person to reinstall.
- I only have this one Mac - no other Macs to assist are rentable / borrowable in the immediate future for me
How can I install a macOS on my MacMini again of figure from the logs what the error in question means or understand when an OS install fails?
.dmgfile from this drive. You then can *just* use TransMac on a Windows machine to make an USB Sierra installer flash drive from this.dmgfile. However, you can *not* do this from the.dmgfile you downloaded from Apple by *just* using TransMac. You have downloaded a difference kind of.dmgfile. – David Anderson Apr 25 '23 at 14:05