The hard drive in my Late 2012 iMac is starting to die Because the hard drives in an iMac are not user accessible (at least not without major intervention), I've I decided to use an external drive as my boot and system drive. I bought this drive and a HighPoint Dual-Bay Thunderbolt 10 Gbps Storage Dock (RocketStor 5212) to house it. I popped the disk into HighPoint, then everything plugged in. Booted into recovery mode (Command-R at boot) Reformatted drive to HFS+ journal (with a GUID partition map) Reinstalled macOS Tips on m Transferring data from a Time Machine backup (users, documents, etc. I checked all options). Everything works perfectly! During the OS installation, the disk format was changed to APFS (instead of HFS+) because I'm using High Sierra. Finally, I went into System Preferences and enabled FileVault (which is still running in the background and will probably take another day or two). Best of all, my 2012 iMac is even faster now than it was when it was brand new! 5212)
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