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Is it possible to upgrade without upgrading the boot filesystem to APFS? I have a Fusion Drive, and don't have high confidence Apple got this right.
by yborg 8y ago
Is it possible to upgrade without upgrading the boot filesystem to APFS? I have a Fusion Drive, and don't have high confidence Apple got this right.
- chmaynard 8y agoProbably not. I wouldn't be too concerned, I've heard that the file system engineering team at Apple is extremely good. For example, they pulled off the conversion from HFS to APFS in iOS without a hitch.
- LeoPanthera 8y ago> don't have high confidence Apple got this right I'd love to know why. The transition to APFS for all other devices has been utterly seamless. Apple probably has a whole filesystem team. I wonder if you have any special qualifications to justify why you think you know better?
- yborg 8y ago>for all other devices Yes, the solid state storage for which it is designed. The Fusion Drive by definition includes rotating media and compounds this problem by involving 2 devices in a common logical storage device. The APFS support for Fusion Drives was pulled from High Sierra for reasons that were never explained so there were apparently issues, and without knowing what those were it is impossible to evaluate how likely it is that these were all resolved now.
- mr_toad 8y agoThey could have pulled it from Mojave too if they felt there were still issues.
- yborg 8y agoWell, took a backup and decided to go for it. You don't get a choice, it converts the boot filesystem to APFS. Took about 3 hours on a very full 1.5 TB Fusion Drive, but converted successfully. We'll see how it goes.