![]() If you have a need for a really old OS and don’t want to download and install, contact MacRecycleClinic, as we have DVDs with most of the older OS software – including some PowerPC software, and can help you with the install. Note that some of the earlier Mac OS varieties like OS 7 Lion is, for some reason, sold by Apple rather than provided for free (but keep reading – there’s a solution for that!). Even tho Catalina is available via the App Store, we’ll include it here (as a link). Thus, we offer a list of OS downloads (from the Apple website and beyond) so that you don’t have to go looking for them. While it might seem easy to just Google your request, it’s not always that easy. At the MacRecycleClinic, we keep thumb drives and external hard drives partitioned with individual installers from Catalina on back – or even Time Machine backups (which are quicker than OS installs). Those of us who use Macs may have need to reinstall an older version of the OS from time to time. Best way is to use the Contact Us page at. ![]() So there you have it! Let us know if you were able to follow the tutorials to successfully restore your Fusion Drive or if you have some other suggestions. So again -be sure to have a clone/Time Machine backup or you will lose all your data. Note those final commands at the end – Terminal does format the drive after it is recombined – and it won’t mount until that happens. The drives I wanted to work with were identified as disk0 and disk1. ![]() I captured the process from start to finish below so you can see what it actually looks like. Once you’re in Terminal, follow the tutorial to identify the the two drives (diskutil list) and then process them to reintegrate as one drive. But you’ll see why this is so important in just a minute. If there were issues, I could always reinstall an OS (up to Catalina in this case). The benefit in my mind is that you are essentially working on your main Mac (and its split Fusion Drive) as if it were an external drive.Īgain, anytime you are doing something like this, be sure to do a backup of your data – I was working from a Mac Mini (early 2012) that just had an OS on it so I wasn’t concerned about it losing data. Once booted into the external drive, you can just run Terminal from the Utilities folder and go from there (no need to use Recovery Drive). I used El Capitan (10.11.6) but anything up to Catalina should work. I took a slightly different route – I have an external drive (see above) with an OS that my Mac can boot into. A software company called Stellar also has an easy-to-use tutorial here.Įssentially, the instructions will tell you to boot into the recovery drive of the the machine you are using with the split Fusion Drive and use Terminal to input a series of commands that will, ultimately, reintegrate the two split drives. The quickest way to find all the tutorials is to use your favorite search engine for “Repair Fusion Drive.” But if you just want to see what Apple says – you can go here. Just three of the many video tutorials from YouTube to help you with a problem Fusion Drive. It turns out there are a number of good tutorials out there – including YouTube videos – to help you easily recombine your Fusion Drive. Code that is used often is stored in the SSD so that it can be accessed rapidly. Why they were split is a good question – the design of the drive is, as Apple says, to improve performance. The two Macs we came across (one an iMac, one a Mac Mini) were split into a One TB hard drive and a 200 GB SSD Drive. The issue we’ve found – twice now – is that this drive has been split so that it looks like a regular hard drive and a smaller SSD drive. What exactly is a Fusion Drive? Apple says, “Fusion Drive, a storage option on some iMac and Mac mini computers, combines a hard drive and flash storage in a single volume for improved performance and storage capacity.” Recently we have been seeing newer Macs – iMacs and Minis – that come with Apple’s Fusion Drive.
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