![]() I typically have around 50GB free on the system SSD partition. But in my case with the 121GB SSD it works like a charm. ![]() Now that's not worth splitting, of course. In later variations of fusion setups (in some iMacs?) Apple actually reduced the capacity of the SSD down to 32GB. 121GB SSD + 1TB HDD in my case).Īfterwards you simply can make your boot partition on the SSD part (/dev/disk0) and off it boots. In fact that way you gain the capacity of the SSD for free use (e.g. ![]() Once you remove the "fusion" your system simply will see both devices as they are. ![]() You only have the capacity of the HDD (e.g. The "fusion" is simply on the software side: basically the SSD is used as a cache for frequently accessed filesystem blocks from the HDD. Basically from the hardware side it is simply a HDD and a SSD (it's not one single device, it's two separate parts). The "XXXXXX-XXXX-XXXX" value and then type: diskutil coreStorage delete XXXXXX-XXXX-XXXX In "Logical Volume Group XXXXXX-XXXX-XXXX" copy Will print out a tree of the device setup. I checked my old logs from back in 2014/15 something and this is how I did it (which may or may not still work)īoot from an install USB stick (or recovery?) and open Terminal (via Menu > Utilities) diskutil coreStorage list You could put two SSDs into the machine afterwards. If one is broken (either the SSD or the HDD) you can continue from there. So what I would recommend is to look in Disk Utility (you need to do it via Terminal, not the GUI) if you can break apart both devices (removing the fusion) and then initialise them separately. Using the SSD for the system installation and the HDD for all kind of data stuff. Basically making it no longer show up as a single unit, but 2 actual devices. ![]() First thing I did was to "unfusion" the thing with Disk Utility. I do have a so called Fusion drive setup in my Mac mini (late 2014) too. ![]()
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