I have a Mac Pro 4,1, flashed to 5,1, running Mojave, it has a 4TB HDD, but I only seem to be able to access 1.8TB - the remaining 2.2TB is shown in Disk Utility as "Free space".
I have tried removing the "Free space" partition, which increases the "Sonoma" partition (actually no OS on that partition), but when applying that change I always get a failure.
In fact, doesn't seem to matter what combination of OS and hardware I try (El Capitan, Sierra, High Sierra, Mojave, Sonoma, this flashed 4,1 and a real 5,1), I always have the same result - failure, with 2.2TB of "Free space".
I have also tried wiping the whole disk and starting again - no difference.
What am I missing here about formatting this disk? Thanks.
I have tried removing the "Free space" partition, which increases the "Sonoma" partition (actually no OS on that partition), but when applying that change I always get a failure.
In fact, doesn't seem to matter what combination of OS and hardware I try (El Capitan, Sierra, High Sierra, Mojave, Sonoma, this flashed 4,1 and a real 5,1), I always have the same result - failure, with 2.2TB of "Free space".
I have also tried wiping the whole disk and starting again - no difference.
What am I missing here about formatting this disk? Thanks.