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I would like to my iMac 27 last 2014 fusion drive to NVMe ssd.
Because my iMac doesn't work anymore after Big Sur upgrade. Looks like Big Sur didn't recognize my iMac fusion drive.
I found related discussion :
https://discussions.apple.com/thread/252472545?answerId=254687632022#254687632022
But I would like to need a confirmation that samsung m2 ssd will work with Sintech M.2 nVME SSD Adapter or not.
Any comment will be appreciated.
iMac 27″, macOS 11.4
Try this. This will erase all data on the Fusion Drive:
-Jack
Try this. This will erase all data on the Fusion Drive:
-Jack
Yes, it has a problem.
https://discussions.apple.com/thread/252095970
I had to install Big Sur at the service center with pay, and all my data was gone.
At that time, my iMac hardware check has no problem at all.
From last month, suddenly my iMac 27" late 2014 doesn't work at all.
Just apple logo, no progress.
Download a Knoppix v8.6.1 DVD .iso image if it is still available, otherwise download the most recent version (I have not personally tried the v9.x version yet). Get one with "EN" in the name for "ENglish". Use the downloaded Knoppix .iso file as a source for Etcher (Mac/Windows/Linux) which will create a bootable USB stick. Option Boot the Knoppix USB stick and select the orange icon labeled "EFI". The Mac may appear frozen on the boot picker menu so give Knoppix lots of time to finish booting.
Once it boots to the Knoppix desktop click the "Start" menu button on the lower left corner of the Taskbar and navigate the menus to "System Tools ---> GSmartControl". Within the GSmartControl app double-click on the icon for the hard drive which will open the health report for the drive as the hard drive is the most likely drive to be failing. Post the complete report here.
Welcome to Apple Support Communities.
macOS Big Sur has no issues with Fusion Drive. Something isn't quite right.
Go to Disk Utility, and select "View" > "Show All Devices". Select each device (or entry shown), and take a screenshot of it and upload them all here.
-Jack
That is a couple of people with issues. A very very small number. Millions with Fusion Drive have upgraded without issues. If it was a widespread big issue, macOS Big Sur would not be available for Fusion Drive.
Just to confirm; your Mac doesn't work at all? Does it boot? What does it show upon startup? Please explain the exact issue.
-Jack
If the hard drive part of the Fusion Drive is failing, then you will get these issues. Try running the Apple Diagnostics to see if any hardware issues are detected. If the diagnostic does not report any issues, then I can provide instructions for creating and using a Linux boot USB stick to check the health of the hard drive. Let me know if you are interested in the latter option.
No boot.
Just apple logo show and progress bar progress to middle position.
I tried to erase volume group,
But It failed.
there was a message 'it can't erase volume group because of failing ????' something like that message.
( my memory is not clear but ....)
Yes, Please!
iMac 27" late 2014 NVMe upgrade
