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I have a Macbook Air (early 2015) model on MacOS Mojave. I cannot install BigSur since my disk is Macintosh HD. I received a prompt that "This volume is not formatted as APFS". I would like to ask how I can possibly migrate / upgrade my disk / volume to APFS. Thanks.
MacBook Air 11″, macOS 10.14
1. Restart in recovery mode (Hold command-R while starting).
2. Open Disk Utility
5. Click on the SSD volume, then click the Unmount button (this is the trick).
4. In the Edit menu, you can now select Convert to APFS...
5. Proceed and done
That’s what sometimes happens when it tries to install Mojave on an APFS formatted drive. The way to resolve is to format the drive Mac OS Extended. You seem to be in a catch 22. I don’t think you can convert back to HFS+.
Did what you mentioned.
problem now, when i restart it always goes to recovery mode.
I tried selecting the startup disk but getting
”running bless to place boot files failed”
i open disk utility again and run first aid, it turns out OK.
Try reinstalling the macOS from Recovery.
I got a prompt
”could not create preboot volume for apfs install”
Can't Install BigSur - Disk not formatted as APFS
