Steps to Fuse Split Drives in macOS Big Sur or earlier till macOS Mojave:Ī) Restart your Mac, then press-hold Command + R keys. So, backup your Mac by using Time Machine before performing the fusion steps. Warning : You may suffer data loss during this troubleshooting process. When the fusion drive is split into two separate drives (HDD and SSD), you need to fuse the two drives into a single logical volume. Fuse the Split Drives into a Single Logical Volume In case you find two separate drives, then read the next troubleshooting method. Click the Storage tab.ī) If a drive labelled as Fusion Drive is present, then it is okay. To know the status of your fusion drive, perform the following steps:Ī) Go to Apple menu > About This Mac. And, in case of any data loss, use the Mac data recovery software downloaded earlier to recover lost, deleted, or inaccessible data from your fusion drive on Mac running on macOS Big Sur or earlier. Read on to learn various troubleshooting techniques to fix Apple fusion drive not visible issue on your Mac.

And, when the SSD is inaccessible, your Mac won’t start.ĭon’t worry.

So-when the SSD is perfect-your Mac boots up, but the hard drive may not be visible in Disk Utility or may not show up in Storage under System Information. Or, one of the two storage devices in the fusion drive may turn inaccessible due to file system corruption or drive failure. However, sometimes, the fusion drive won’t show up as a single entity in Finder and appear as two separate drives due to splitting. Plus, the seamless integration (fusion) of the two drives as a single logical volume lets you work on your Mac smoothly. You get the benefit of SSD that is quick in loading macOS and HDD that has several gigabytes of storage space. IMac and Mac mini that uses a fusion drive technology that provides a better user experience within your means.

Disk not showing up in disk utility