- Joined
- May 5, 2017
- Messages
- 2
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Hi. I was applying an update to (10.15.5) my Late 2015 iMac 27, from a copy of the update that was downloaded from Apple to a USB drive, when the process failed to proceed. Contacted Apple Support and they indicated that the Fusion drive was "split", so I spent quite a while with a tech on the phone and they walked me through the process using "Startup Manager" and the Terminal app. Reinstalled Mac OS X (10.15.5) and the performance was horrible.
Made an appt. at my local Apple Store, (50 miles away) but was cancelled due to Covid-19 and the store closing. Back to the phone.
Received instructions on how to "resetFusion", erasing the Fusion drive and then reinstalled Mac OS X 10.15.5 again, and the same result horrible performance.
Running Disk Utility from StartupManager and performing all the possible checks and get the "drive is healthy" result.
Not sure the resetFusion drive actually did what it was because when I was working with the support tech, we were entering some pretty involved commands in Terminal (diskutil cs commands I believe).
I retired to western North Carolina where all the Apple support options are unavailable due to the pandemic, but am thinking about taking my computer back to Chicago where I bought my computer and see if a genius can help.
Thoughts?
JP
Made an appt. at my local Apple Store, (50 miles away) but was cancelled due to Covid-19 and the store closing. Back to the phone.
Received instructions on how to "resetFusion", erasing the Fusion drive and then reinstalled Mac OS X 10.15.5 again, and the same result horrible performance.
Running Disk Utility from StartupManager and performing all the possible checks and get the "drive is healthy" result.
Not sure the resetFusion drive actually did what it was because when I was working with the support tech, we were entering some pretty involved commands in Terminal (diskutil cs commands I believe).
I retired to western North Carolina where all the Apple support options are unavailable due to the pandemic, but am thinking about taking my computer back to Chicago where I bought my computer and see if a genius can help.
Thoughts?
JP