error code 69716 on install of MacOS Catalina
I seem to be unable to achieve upgrading to Catalina each time I try I get error code 69716
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Seems a problem with Fusion Drives...
-69716 System verify Storage Repair failed…
on an iMac (late 2012) with a 1TB Fusion Drive.
anyway, long story short... needed to recreate the fusion drive from the recovery terminal (after Backup, of course). After recreation, installation worked fine.
This is definitely a Fusion hardware issue. I think that the drive is bad and needs to be replaced.