Chosen Solution
Hey, I have a problem with the MacBook of a friend. It started with the SSD not being recognized. I removed the SSD, formatted it on another Mac and reinstalled it. The SSD is now recognized in the disk utility, but every time you want to install a new system via recovery mode it either hangs or the system is again not recognized when it restarts. Then I installed the original HDD, whereupon the Mac suddenly started again. Also a reinstallation of the operating system has worked, only it could not load it somehow from a Time Machine backup, there it is also always aborted. Can anyone help me why the Mac can boot from the HDD and not from the SSD? I am now really at the end with my ideas. Thanks for any answer
Ah! Sounds like you’re hitting the HFS+ Vs APFS compatibility issue. I bet your HDD is setup with Sierra or older and the system you used was running High Sierra or newer when you set up the SSD. If that’s the case you need to upgrade you HDD with a newer macOS. That will do three things; First upgrade the systems firmware so APFS boot volumes work, next the HDD file system is upgraded to APFS, and lastly the OS files are updated.
Hello!To me, this seems to be an issue with the recovery installer, try seeing if the recovery works on another Mac or try making a usb macOS installer, there is an easy to follow tutorial on apples website.Im sorry if this answer is completely off, I am having trouble understanding the last part, did it work with the time machine backup, or not?