How To: Fix A Split Fusion Drive on iMac [High Sierra | MacOS Mojave]

Great tutorial, thank you!

diskutil resetFusion

- COMMAND NOT FOUND

im using a 2019 5k imac, help please

I ACCIDENTALLY erased the HDD on my fusion drive during my system reset. through recovery mode, it doesn’t show up even in the DISK UTILITY, can someone help me?

Can I use this way for ventura

Amazing detail. Thank you so much

Hey Can you help me it just created a Macintosh HD (not a fusion drive) on my side how can I change this please ?

Thank you soo much ..
If error check what you encode 😊😊

This was really helpful as it WORKED. I enjoyed the video while you were typing the codes and my mind said what a PRO.

Thanks bro, ya save the day!
Greetings from Brazil!
OnE LoVe!¡!

Just bought an iMac and had it erased. Never heard of the Fusion Drive nor knew what it was. Thnx to your video I was able to get it back to being one.

Salvou a lavoura aqui! Obrigado!!!

DONT USE MOJAVE CODE....... ERASES ALL YOUR DATA..!!!!!!

Thanks so much for posting this video. My iMac became unusable after I erased the Fusion Drive with the intention of reloading the operating system. Your information allowed me to fix my Fusion Drive and reinstall the Mac OS.

Excellent, thank you for posting this. I had no idea why my drives had separated. 👍🏻

Which command do I use if I’m using a MacBook 13 Pro 2020 Monterey

Would jhfs be replaced with apfs in my case? That's what I have here.

Great tutorial!!

Nice one 😇

it says Stacked Core Storage Sets are not supported (-69754 )
HELP ME

The best solution. Worked. Thanks

Fusion drive doesn’t perform much faster than a normal hard drive. It’s just a mechanical hard drive inside the IMACS are garbage
And the NVME DRIVE US only like 28 GB. So what you do is you get 128 OR up to a terabyte NVME drive ,AND 256 to 1 terabyte sata SSD. Take Your iMac apart put in the NVME drive put in the SSD. Keep the drives split and install macos on the super fast NVME drive and use the SATA SSD AS storage or make a fusion drive out of those? It will still be monster fast but putting the operating system on the NVME and using the SSD as storage I was giving me by far the best results.

Thanks Very Much you are a genius!! ❤😀

On mojave when I tipe yes it says: comand not found

Do you know if this works with APFS SSD and HDD as fusion drive on High Sierra?

Mulțumesc!!!!!

Thanks bro

I just bought a refurbished mid-2011 iMac 27" and it looks like it only has 121.33 SSD. It's supposed to have 1TB HDD, too. When I go into "storage' under "about this mac" I see a non-clickable grey colored icon of a hard disk and underneath it it says 1TB and next to that directly to the right there is a long disk drive capacity bar with part of it highlighted in yellow on the far left side indicating the amount of space taken up by the operating system, etc and then directly above the long drive capacity bar it says "102.89GB available of 121.33GB." Why doesn't it say "1.1TB available of 1.12TB" or something similar? I am concerned the 1TB is hidden or missing so I won't be able to utilize it. Like I said I just bought this iMac. I haven't even used it. I'm about ready to return it if I don't figure this out. I hope I'm not jumping to conclusions here

Mine is an iMac 2017 that came with High Sierra but is not running Big Sur. May I know which set of commands to follow? Besides, will the data be wiped out?

Hi. I’m trying to follow these instructions but keep getting a message couldn’t I mount disk error-69888. Please can you help me?

Applicable for running 10.15?

will I lose my data by doing this method?

good job 👏 thank you

Error: -69888: Couldn't unmount disk Please fix it

Gracias!! 👏🏼👏🏼

Incredibly helpful, thank you!

THANK YOU SO MUCH!!!

I'm planning on installing an 970evo NVme 5GB and an 860 evo SSD Sata in my 2015 imac 27 5k how can I format these two drives for them to work correctly, should I fuse them together ? Do you have the instructions for big sur by chance, because my current OS is Big sur.
Thank you

your the best! thanks a lot!

very useful, thanks

AMAZING!!! THANK YOU SO MUCH!!!!

your the mannnnn...thx broooww...worked!!!

You are the man! Thank you boss

1. cmd + r
2. DiskUtility (FestplattenDienstprogramm)
3.Terminal:"diskutil list"
3a. unmount disks
4. Terminal:"diskutil cs create Fusion disk0 disk1" or "diskutil cs create MacintoshHd disk0 disk1"(creating new logical Group with SSD0 and HDD1)
4a.. diskutil cs list
5. Terminal: "diskutil coreStorage createVolume" (copy and paste Disk-ID) "jhfs+ "MacintoshHD"100%
or
5a. Terminal: "diskutil cs createVolume" (copy and paste Disk-ID) "jhfs+ "Fusion"2256g
5b.. diskutil list
6. exit

After installing High Sierra can I then update my iMac to Catalina and later updates?

My Fusion split and will not boot. Seems everything is still there when I check in the utility. Will doing this fix my problem and give access back to my files? Or will it erase everything?

Thank you thank you thank you !,,,,,,,,!!!,!,!

If I could give you 1000 likes I ll do it , your saved me !,,

Do need to erase and unmount both drives first?

I did change from hdd to ssd is it possible for fusion drive .?