Questions tagged [fusion-drive]

Apple's branding of a tiered storage solution where an SSD and HDD are combined using core storage to appear as one fast and spacious drive.

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iMac 27 How to restore a SSD made invisible after formatting a fusion drive from APFS to HFS+

I bought a used Imac 27 with APFS fusion drive mOdel Identifier iMac15,1 before discovering the previous owner had replaced the original 512 Gb SSD by third party one with an adapter. After formatting ...
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How to replace fusion drive and restore MacOS?

I have 2014 Mac Mini with fusion drive running Catalina. If I replace original fusion SSD with bigger one, can I restore Time Machine backup or reinstall OS?
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Do not want to create a Catalina Fusion Drive but may have a HDD and SSD

I know in times past that installing the Mac OS from scratch had a habit of creating a 'fusion' drive if you had both a SSD and HDD in the same box and this could create some odd disk errors down the ...
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Once More an Issue with Fusion Drive

I asked about this a while back, and finally decided to go ahead and rebuild the fusion drive. The Mac is a Mini, it came with a fusion drive but the original hard drive failed so I swapped it out ...
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2018 iMac w/fusion drive has prohibitory symbol on boot

My iMac got super slow and I had to power it off. When I restarted, it had a 'kernel panic'. Restarted again and got the prohibitory symbol. I then booted into recovery mode. Tragically, the hard disk ...
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Mac mini FusionDrive - “No CoreStorage Logical Volume Groups Found”

I can't figure out how to correct this at this point. I’m hoping someone here can point me in the correct direction. I have posted my terminal outputs below for diskUtil list and diskUtil cs list. @...
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Bootcamp failing with “cannot create partion” and corrupting APFS container

My issue is similar to this one, Bootcamp says Disk Could Not Be Partitioned on Catalina Version 10.15.2 I'm on a 2019 iMac i9 27" with a 3TB Fusion that's been formatted with Catalina and APFS ...
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Using one old fusion drive as two separate external drives

Recently my old fusion drive (1T HHD + 128G SSD) on my 2012 late Mac mini might have issues. The OS is very slow and has some read errors when I tried to use CCC to clone it. Anyways, I managed to ...
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Is it worth unsplitting my fusion drive?

I was messing around with my iMac and got to a point where I had to reinstall the OS, but it turned out the Fusion Drive had split into a 1 TB hard drive and a 24 GB flash drive. After looking around ...
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APFS Fusion Drive with external USB on 2018 Mac Mini

For fun, I've bought a USB thumbdrive from a reputable brand, and was able to build an APFS fusion drive (with the internal SSD as the main, and the USB thumbdrive as the secondary) on my 2018 Mac ...
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Track down disk activity MacMini and Mojave

Late 2014 MacMini with combo SSD + HD Fusion Drive Usually runs great, about 3x a day I can hear the HD really doing a lot of activity, reads / writes. What can I use to determine which process is ...
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Trouble restoring hard drive space after deleting bootcamp partition

I have a problem with my Fusion Drive. I created partition for Bootcamp, then deleted it, then something went wrong. I lost 200 GB of space and I have a trouble restoring it, Fusion Drive capacity ...
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How do I stop a 2012 iMac internal Fusion drive from powering up

I want to completely stop my internal Fusion drive from powering up, since I no longer use it and it is very noisy. My late 2012 27” iMac came with a Fusion drive, which has long since stopped ...
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967 views

creating APFS fusion drive / conversion to APFS from HFS+ fusion drive fails - “you are trying to create an upside down Fusion”

I have 1TB Internal SSD and 512GB SD card in a SD slot. I can create a fusion drive in HFS+ format, and the drive was running fine on my previous El Capitan system. Now that I upgraded my system to ...
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How to remove Fusion Drive?

I tried applying recommendations from other sites, but the methods did't work. diskutil cs list - no logical drives diskutil apfs deletecontainer - also does not work I loaded with bootable ...
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iMac beachballing for no reason — I suspect it might be faulty hardware. What can I do to work around it? [duplicate]

The Problem: A couple of weeks ago, the iMac started "beachballing" regularly in normal use There is no discernible pattern to what triggered a beachball. It could be switching between windows, ...
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Upgrade from Fusion Drive to SSD without breaking fusion first

I replaced my fusion drive with a 1TB SSD but didn't break the fusion first. I'm running an iMac (27-inch, Late 2013) 3.2ghz i5 w/ 8GB RAM with Catalina 10.15.3 I'm attaching a photo of my device ...
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Performance increase from Fusion Drive

I have a 2011 27" iMac i7 3.4gHz with 24 GB RAM. The startup disk is a 256 GB SSD and then I have another 1TB HDD installed as well. I use it for both design (Adobe Suite, Sketch, etc) and front-end ...
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How Can I Recover My Data From a Failed Fusion Drive Using TestDisk?

I have a 2017 iMac (version 18,3) with Mojave on a 2TB Fusion Ddrive. The volume is not encrypted, no Bootcamp, I created no extra partitions. Aside from the migrated data from my old MB Pro, it ...
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409 views

Is my Fusion Drive set up on my iMac correct? or is there a fix?

I have a 2013 iMac previously running Mojave, now running Catalina. I thought on Catalina, that when in Internet Disk Recovery Mode, you should be able to select the Fusion Drive and be able to erase ...
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Had to force computer into OS recovery

Upon opening "Disk Utility" from the Recovery window, a prompt asks if I want to revert to a working state. How far back does a working state go? Does this mean I will lose files from my desktop? ...
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DIY Fusion Drive: Adding Recovery HD to a CoreStorage Volume Group

After creating a "DIY Fusion Drive" using the methods below in 10.8, I'm now wondering how to add a RecoveryHD partition to the internal drive. Here's what I did to create a Logical Volume Group ...
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how to prepare two SSDs after upgrade (merge to fusion drive or not, terminal commands)

I just upgraded the CPU of my 2015 27" Retina iMac and while I was in there I took out the 1TB HDD and replaced it with a 512GB Samsung 850 Pro SSD. Now I'm ready to set it all up, but I'm not sure ...
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What should I do about a Mac Mini whose fusion drive is getting steadily slower and slower?

I have a 2012 Mac Mini (running OS/X 10.11.6) with an Apple-provided internal 1TB fusion drive that appears to be suffering from some kind of performance problem -- it seems to be getting slower and ...
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Can I recover a drive after accidentally allocating it to a fusion drive?

I made an incredibly boneheaded mistake. I typed diskutil cs create Fusion\ Drive disk1 disk2 instead of diskutil cs create Fusion\ Drive disk0 disk1 (while I was looking at the list to make sure I ...
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How can I create an APFS fusion drive in Mojave using my SSD and HD?

Now that Mojave supports APFS in fusion drives, how can I create a fusion drive from scratch with my SSD and HD? I have a Mac Mini with an 128 GB SSD and a 1TB HD, already updated to Mojave and using ...
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2012 Mac Mini with Fusion Drive only Boots while Verbose Mode

I have a mac mini 2012 which only boots to completion when in verbose mode. when just normal booted it gives the fan symbol for a few seconds and then loops back around. I've done a time machine ...
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746 views

Hard-Drive Storage size issues after partition Disk Utility

I wanted to create a partition on my iMac for Windows to be able to play Windows games. I have used Disk Utility to create a 20GB partition on my 1,12TB Fusion drive. This caused a problem on my ...
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Macbook 'Missing Space' Issue after Removing Partition

I had previously set up my 2012 Macbook Pro in a fusion drive configuration (250GB ssd and 500GB HD) for macOS and had a 250ish GB partition for Windows on my 500 GB hard drive. I tried removing the ...
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6k views

How do I split Fusion drive on Mojave / APFS?

I have a 2013 iMac (27" 3.5GHz i7, model id iMac14,2, EMC 2639) that has a Fusion drive. I want to replace the Fusion's internal HDD with an SSD. My understanding is that I should split the Fusion ...
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Can I upgrade the size of my Fusion Drive from 1TB to 3TB?

I bought a new iMac last summer and went with the 1TB Fusion drive. It works well, but is already full. Is it possible to upgrade the size of the fusion drive myself? Can I buy a 3TB internal drive ...
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Is it possible to add an SSD module to an iMac 27" Late 2012 model to create a fusion drive on that?

I have this old iMac 27", model iMac 13,2 (Late 2012). This computer has a regular hard disk. I wonder if it is possible to add a SSD disk module to it, to convert the main disk into a fusion drive? ...
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APFS Volume not claiming available APFS Container space

I'm at my wit's end with this, and I can't find anything about it in documentation or questions, so I thought I'd ask one. I had an APFS Fusion Drive that included two drives: (120+500) GB. I cloned (...
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844 views

CoreStorage disk won't unmount

My roll-your-own Fusion drive has become corrupted somehow, and I want to start all over. However, it won't unmount. When I run (from another startup disk, of course) diskutil cs delete <Logical ...
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The startup disk cannot be partitioned or restored to a single partition. Windows 10 and Mojave iMac Fusion Drive

The startup disk cannot be partitioned or restored to a single partition. The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp ...
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Does this mean my fusion drive has split?

I've been getting the message that my Mac has run out of application memory. I've been trying to clear up some disk space, but some how it doesn't move free space up, in fact it decreased. Then I ...
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Re-Merge El Capitan Recovery with Original Mac OS

Due to recent partitioning mistakes I was unable to boot up my Mac OSX or my Bootcamp on my Mac since. As a last resort I went to recovery mode and downloaded a new El Capitan OS. Unfortunately this ...
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Fusion drive only shows the SSD partition

Ok, I am at my wit's end. Last week after 10.13.3 failed to install twice, my late 2014 5K Retina iMac became painfully slow. Eventually it just bricked. I tried to restore from Time Capsule over ...
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Apple_Boot “Boot OS X” partition and Fusion Drive

I recently had an 10.13.4 update problem and while trying to fix it I ended up "corrupting" completely my "Boot OS X" partition files. while my Fusion drive partition was updated correctly to 10.13.4, ...
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Reusing iMac Fusion Drive as external drive

The logic board of my iMac 27" Retina broke and I find it impossible to get a new one in the country where I'm living in. I wonder if it's possible to access the data in the Fusion hard drive, ...
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How to determine which files are on SSD on Fusion Drive?

My question is: How can i determine which files are on the SSD "partition" on Fusion Drive? I have an iMac with 1TB Fusion Drive, and it would be good to know which apps or data are on which ...
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How to upgrade to 10.13.3 with fusion drive on apfs

I installed High Sierra via the app store, the regular way. In the process the fusion drive of my mac mini was converted to apfs. I am still on 10.13.1, and wondered, why available upgrades did not ...
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FileVault 2 encrypted Fusion Drive on iMac doesn't boot anymore

I bought a 2017 iMac, migrated the contents of my 2012 iMac (so I have my data! ) and I wanted to erase the 2012 iMac it replaces using Disk Utility in Recovery Mode. I had hoped this would be a ...
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Can I make a DIY Fusion Drive?

I have a Mac Mini with two drives: a 256GB SSD and a 500GB HDD. From what I've read, the new Fusion Drive does all of it's magic in software, using the Core Storage APIs. Can I get my setup to ...
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Fusion Drive - Lost space when resizing

I'm having trouble with my Fusion Drive. I was trying to reclaim a 100gb partition that I used BootCamp for. I was unable to delete the BootCamp partition using the Assistant, so I used the Utility ...
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Windows 10 Boot Camp on Mac mini Fusion Drive is running very slow. How to replace HDD / upgrade disk to SSD without reinstalling OS?

Hardware: - Mac mini (late 2014) - Core-i5 - 8GB Logical drive: - Fusion Drive 1,15TB Physical drives: - 128GB PCIe - 1000GB HDD Partitions and systems: - 250GB HFS+ macOS High Sierra - 850GB NTFS ...
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Faster or Bigger? [duplicate]

I had my question put 'on hold' because someone deemed it opinion oriented, so I'll rephrase it - For video editing, is it better to have a faster hard drive or a larger one? I hope to learn editing ...
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Problem with 3 TB Fusion Drive, it can't be deleted, formatted or partitioned

I want to clarify that I already followed the instruction with I think I messed up the Fusion Drive on my 1TB iMac (with BootCamp) but I think I have mayor problems. I followed the instructions to '...
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DIY Fusion drive with 3 drives

Is it possible to build a DIY Fusion drive using 3 drives - 2 HD's and 1 SSD? Will the Fusion machinery optimise on three levels i.e. SSD, then fast HD, then slow HD? I have a mid 2011 27" iMac, ...
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Fusion Drive lost space after bootcamp-fail. resizeStack throws an error. What can I do?

I have a 2 TB Fusion Drive in a 5K iMac (Late 2015). Two days ago, I started the bootcamp assistant to create a partition for Windows 10. It got stuck (let it run 30 minutes), however, which forced me ...