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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Apple HDD shows Untitled after failed Monterey OS installation. Is there a way to access it?

The computer is Late 2015 imac with 5K Retina display and 16GB Ram and 1TB Fusion drive. It had El Capitan for years until Safari recently notified me that it can't update anymore on El Capitan and I ...
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Troubleshooting: iMac SSD appears then disappears

I have a 27" iMac (18,3) that originally came with a 2TB Fusion drive. Last week, the iMac started showing signs of HDD failure so I swapped out the main drive with an SSD from OWC. After ...
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APFS bug?: Faulty 'Disk full' message after spanning APFS container over 2 physical disk-partitions

I used the following command on two physical Samsung SSD's inside my Mac mini 2012 with OCLP and Big Sur. I use it as a server, kids Apple Arcade gamingbox, AppleTV, Photo presenter in 4K (with ...
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How to Rebuild MacintoshHD to Reinstall MacOS from Bootable Drive? (iMac, 2017)

Model: iMac, 27 inch, Fusion Drive, 2017 Version: MacOS Monterey Beta (Version issues), MacOS Catalina (Version in bootable drive) Notes: I have a separate bootcamp Windows partition which works fine ...
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I mistakenly deleted the HD Data Partition in my 2019 iMac 2TB Fusion drive when trying to downgrade OS back to Mojave. Need help to get it back

I backed up whole drive with CCC first, but booting from that does not seem to finish loading. Starting up from a USB Mojave installer (which I have used before) I reformatted to HFS extended and then ...
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Is it possible to replace an iMac Fusion Drive HDD with a bootcamp partition on it with an SSD using migration instead of reinstalling Windows?

On a late-2015 27" iMac, I have an SSD and a 2 TB HDD as a Fusion Drive, and Windows installed on the HDD with bootcamp. I'd like to replace the HDD with a 2 TB SDD. Is it possible to e.g. ...
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Time Machine fails since enabling FileVault on iMac with Fusion Drive

I have an iMac with a Fusion Drive, and Time Machine configured to back up to an external USB disk. Everything used to work well, but then I enabled FileVault for the internal Fusion Drive. Since then,...
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Enabling external booting on a fusion drive Mac

I am trying to change the secure boot settings so that I can allow booting from an external disk. Normally to do this you would go into recovery mode with command + r and then change the settings. ...
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Restore from a Fusion Drive to a standard hard drive

I have an iMac with a built in Fusion Drive. I have switched to using an external Thunderbolt SSD as my boot disk, and I would now like to back up and wipe the internal Fusion Drive so that it can be ...
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Issue with my new iMac

I have a new iMac (27" 5k, mid-2017, 3.7ghz i5)(new in box, hadn't been opened), that has a 2tb fusion drive. I went through set up, but maybe I missed a step, because my drives are showing up ...
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Does fixing a Fusion Drive using 'diskutil resetFusion' destroy the BOOTCAMP partition

I have a 2015 iMac 27" retina whose Fusion Drive split into separate drives whilst attempting to fix a partition table issue prior to upgrading to macOS Big Sur. I have a fully functioning ...
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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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Mac mini FusionDrive - “No CoreStorage Logical Volume Groups Found” [closed]

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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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Mac Pro 5.1 (mid 2012 ) Fusion Drive (2 SSDs and 1 HDD)

I have 2 SSDs 160GB each and a 4TB Disk (all SATA) I was thinking to put them in Fusion Drive setup, will it work? how it will work? which setup is recommended if possible? any speed benefits? ...
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Can I use a Seagate SSHD in my iMac and if so, how do I load OSX (High Sierra) onto it

I'm looking to upgrade my iMac 14.2 (late 2013) by swapping out the existing HDD with a Seagate SSHD Hybrid drive, along with adding another 8Gb memory. I've done a similar upgrade on my daughter's ...
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Rescue Fusion Drive

Local Apple support suggested me to change the 2 TB Seagate Fusion drive with a 2 TB SSD to increase speed in my 27" Retina iMac with macOS Sierra installed. I had a full backup done with Carbon Copy ...
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Is it possible to have an Apple Genius replace my Fusion drive with an SSD in my iMac?

Can I take my iMac to an Apple store and have the Geniuses replace its Fusion drive with a pure SSD?
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How to access a fusion drive from ubuntu linux by mounting apple core storage

my iMac with 3TB fusion drive won't boot anymore. even when booting to recovery it crashes with kernel panic. the stack trace says com.apple.driver.Corestorage dependency com.apple.iokit....
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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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macOS El Captain missing disk space on Fusion drive on iMac, missing contents for GPT partition

I was formatting my Fusion drive of 3 TB and unfortunately it seems 1 TB is missing. I tried to search the answer on this forum and found some relevant answers here but my situation is bit different ...
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I Have a problematic SSD

I didn't know how to give this question a better title since I have no idea what happened to my SSD. I was using this SSD in my MacBook Pro set up as a DIY fusion drive with the MBP original HD. ...
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